Jump to content

tlevine

NRG Member
  • Posts

    1,966
  • Joined

  • Last visited

Reputation Activity

  1. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    This ship’s main mast channels are 13’ long, 18” wide and 4” thick.  They are made by laminating three layers of 1/32” sheet together.  The middle layer’s grain is oriented 90 degrees to the outer layers for added strength.  I weighted the channel down while it was drying to prevent warpage.  In actual practice, there would be a slight taper of the channel from the hull to its outer edge, but for this project I ignored that. 
     
    The fore end of the channel is located just behind the aft side of the mast.  There are recesses cut into the fore and aft ends of the channel.  The deadeye strops fit into mortises cut into the channel and a decorative strip holds everything in place.  The channel template shows the locations of the deadeye strop mortices. 

    The location of the fore end of the channel was marked on the hull.  It is 2.5 feet below the rail and runs parallel to the wale.  Templates were used to get the exact shape.  I used the template from making the cap rail as a starting point and modified it to exactly fit the shape of the hull.  The openings for the deadeye strops were made by cutting shallow grooves into the channel and connecting them with a 2 mm chisel.  A #11 blade will also work.  The location of frames 4 and 6 were marked on the inner edge of the channel and 22-gauge brass wires were inserted at those spots for strength.  The fore and aft edges were rounded over but the long outer edge was kept sharp.


    You may have noticed that the deadeyes are not evenly spaced.  On the actual ship, a gunport was located between the third and fourth deadeyes.  I decided to keep things simple and not model the gunport.  If you want, the spacing between frames 5 and 6 will allow you to add one.With the channel installed, a clear finish was applied to the exterior of the hull.  After the finish dried, I sanded the long outer edge of the channel to remove the finish.  This will help adhesion when the decorative strip is added after the deadeyes are installed.
     
     
  2. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    The bit pins are 9” square posts.  The crosspiece is 8’ x 10” x 3” and connects the two pins.  It is morticed into the pins 3’ above the deck.  Shape the ends of the crosspiece as seen in the picture.  I raided my scrap box again for these pieces but the kit will contain the correct thickness of basswood to construct them.

     
    I used the previously drilled pilot holes to locate the centers of the bitt pins and lightly  traced the outline of the bitt pin onto the deck.  A series of holes was drilled inside the outline and they were connected with a #11 blade.  They were enlarged with files until the openings were just large enough to allow the bit pin to pass through them.  They will not be permanently installed until later to make installing the mast easier.

    This is how the model looks with everything temporarily installed.

    Other than installing the channels, the hull is complete.  Next, the wale was painted.  The hull planking was masked off above and below the wale.  I used three coats of artist’s acrylic paint diluted 1:3 paint to water, sanding with 400 grit sandpaper between coats.  I remove the tape as soon as the last coat has been applied to prevent paint adhering to the tape.


     
  3. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    As I mentioned before, the bit pins will be glued to the “B” spacers.  I measured and marked two feet (½” scale) aft from the aft surface of Frame 4 and nine inches (3/16” scale) inboard from the spacers.  These are the centers of the bit pins.  Small pilot holes were drilled up through the deck.
     
    I planked the inner bulwarks, starting at the waterway, using ten-inch-wide planks.  I applied a clear finish at this point.  The top of the bulwarks was sanded flat in preparation for installing the cap rail.  Simply turn the model upside down and sand the bulwark the way you did the base.  This also gives a fresh surface to glue the top rail onto.
     
    Templates were made to determine the shape of the rail.  This is how I made these.  Masking tape was run along the upper edge of the hull planking to prevent marking the wood.  The model was turned upside down and, hugging the side of the ship, a line was drawn along the top of the hull.  Don’t forget to mark fore and aft, port and starboard.

    The rail is 12” wide with a 1” overhang inboard and outboard.  I drew lines 1” (0.02”) outboard and 11” (0.23”)  inboard of the original line.  The picture shows the templated line and the overhangs.

     
    I cut out the templates with a lot of extra paper on either side of them because long, narrow pieces of paper are prone to warping.  They were glued to the 1/32” wood sheet.  I use either Elmer’s glue stick or glue spray that is not water based (3M-45) to help prevent warping.  Both of these adhesives can be removed with isopropanol and scraping.  This is another opportunity to check out your scrap pile for a piece of contrasting color wood.

    Cut out the rails and mark the undersurface with the side and orientation before removing the template.  Remove the template and round over the edges.  If you want a contrasting color for the rails, paint or stain them before installing.



  4. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    Next up was the deck planking.  I marked the center line on the top of the frames and installed “B” spacers between Frames 4 and 5.  These will be used later to secure the bit pins.  This ship has a king plank on either side of the midline, which is wider than the regular planking, 12” instead of 10”.   I shortened the mast partners  so the planks would land on Frame 4.  Just like I did for the hull planking, I used a pencil on one edge to simulate caulking and, because of the camber, sanded a bevel into the lower edge of the other side of the planks for a tight fit.  A row of 10.5” planking was installed on either side of the king planks.  The rest of the planks will be 10” but this allowed the edges of these planks to be aligned with the outer edge of the partners.

    I removed the partner to prevent it from getting damaged.  This is why it was only tack glued.  I used a four-step butt joint pattern for the rest of the deck planking. 

    The rest of the planking was installed, tapering the outermost rows to fit against the waterway. 


     
  5. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    The next  stage of construction was fitting out the mast partners, inner bulwarks, and deck.  On a real ship, the mast partners were made up from several pieces of wood.  For simplicity, I made the mast partners from single piece of cherry from my scrap box.  In the kit, it is made from two pieces of 1/32” basswood, with the two pieces oriented 90 degrees to each other for strength.  It measures 5’6” x 4’ x 3”.  The center of the mast is located 6” forward of the center point of the partners, to allow enough room for four eyebolts aft for securing the truss pendants and lifts.  It is not 100% historically accurate but compromises had to be made during kit design.
     
    The mast is 17.5” in diameter at the partners and is raked aft so the opening will be oval, not round, with the long axis fore and aft.  I began by drilling a hole smaller than the final dimension.  It will be finessed later.  Remember, you can always remove more wood...you can't put it back.  Then the edges and corners were rounded over.


    The waterway was made from two pieces of wood laminated together.  Because of the amount of hull curvature, I prefer to make a template and cut the outline of the bulwark onto a sheet of wood rather than edge-bend.  The template is very simple: a piece of paper which is gradually trimmed to the correct shape.  You only need one template since the two sides are mirror images of each other. The outboard edge of the waterway was traced onto the 1/32” basswood sheet and cut.

    Using a compass, a line was the drawn 10” inboard and the waterway was cut out.  I prefer to make all my marks on the undersurface of the wood, where they will not be seen.  All four surfaces were sanded smooth, keeping the edges sharp.

    Using the same template, I drew the outboard line on a second piece of basswood and cut it out.  A second line was drawn 4” inboard.  This was cut out and sanded but the upper-inner edge was rounded over.  The pictures show both pieces of the waterway.


    The first layer of the waterway was installed and because a template was used, it fits perfectly and without tension.  After the first piece was dry, the second narrow piece was added next to the bulwark, rounded over edge inboard. 

  6. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    Thanks everyone.  When starting this project I wavered between a dummy hull and a simple POB cross section.  One of the advantages to this approach is that it results in a nice desktop model.  The compromise is that certain lines, like the stays, are omitted.  
     
    It is time to plank the hull.  The kit contains enough 1/32” basswood sheet to plank the hull and deck.  I began the planking at the top of the bulwark extensions.  This made them less susceptible to breakage.  There are five rows of planking, followed by two rows of double-thick planks for the wale.  Below the wale, the rest of the planking is the same thickness as the upper part of the hull.  All the planks are the same ten-inch width.  The thin basswood can easily be cut with a #11 blade and straight edge.  No spiling necessary!  I put a slight bevel on the long edge of one side of each plank to get a tight fit between the planks and rubbed a pencil along the other edge to simulate caulking.  The picture shows the hull planked to the top of the wale.

    The wale is made from two rows of double-layer planking and will be painted black later.  I painted the edges of both layers with an archival ink marker before installing them.  After the first layer was installed, the hull was sanded fair.

    For the second layer of the wale, the exposed outer edges were slightly rounded over before painting the edges.  The second layer of the wale was glued to the first layer and the surface  was sanded smooth.  I prefer not to paint the wale until the rest of the hull is completed to prevent damage.   

    The rest of the planking below the wale was installed.  Because some of the plank ends did not land on a bulkhead, it was necessary to glue a scrap of wood on the inner side of the plank to secure it to the plank above.  In this picture, the first two rows lower planks have been installed. 

    After the last row of planking had been installed, I removed most of the wood below the bulkheads by shaving it down with a razor blade.  When most of the wood was removed, the model was put on top of a sheet of sandpaper and the bottom was sanded flat by moving the whole model back and forth.  In this picture, the wale has been dyed with a coat of archival ink so you can see the difference in thickness between the regular planks and the wale. 

  7. Like
    tlevine got a reaction from grsjax in NRG Rigging Project by tlevine - FINISHED   
    The NRG is an educational organization, dedicated to providing our members with the knowledge to improve the quality of their model ship building.  One of the most common problems model builders have is rigging their model.  Kit instructions are poor.  Often, the materials provided in the kit are improperly sized or the cheapest that the manufacturer could obtain.  We all know that blocks are not square!  I wanted to develop a project whose purpose would be to teach ship modelers how to mast and rig a ship without having to build a complete hull.  This model is a 1:48 scale cross-section at the level of the main mast of a late 18th century British sloop of war, Swallow 1779.  To keep the size of the model manageable and eliminate the need for a building board, the hull is cut off just above the waterline.  For the same reason, only the center portion of the lower yard and the lower part of the topmast are constructed.  Also, because this is a cross-section, certain lines, such as the stays and backstays, are not included.  My emphasis will be on demonstrating techniques to improve your rigging skills.  Skills that can be used on your next project.
     
    As this was developed as a teaching aid, certain shortcuts and compromises to historical accuracy were taken.  Wherever possible, I have used measurements provided by the plans and such authorities as Steel and Lees.  I apologize in advance to the master modelers who might criticize my shortcuts.  I have kept the use of power tools to a minimum.  The only thing that is outside the normal collection of hand tools is a serving machine.  The Guild hopes to begin selling this kit in the next few months.
     
    The kit contains all the materials required to complete the model.  But I always keep my scrap box nearby for those times when a piece of a contrasting color wood is desirable.  I will mention those times as the build log progresses.  Also, the build log is made up from the best photographs taken from three builds of this model.  A sharp eye will notice some differences in the wood color because of that.
     
    The hull is constructed in typical plank on bulkhead style.  There is a notched spine and notched bulkheads.  The laser cut sheet of one-eighth inch basswood ply also contains a template for the top and four types of spacers, A through D. 

    The spine and the frames are assembled as seen below.  Frame 1 is installed with the printing facing aft.  This gave me the option of painting the exposed bulkhead after construction was completed.


     
    The mast fits in the slanted slot between Frames 3 and 4.  To keep the mast vertical, support spacers are glued on both sides of the spine.  They will be sanded flush to the spine when the hull is faired. 


    To prevent the hull from twisting and to strengthen it, spacers are placed between each frame.  The three aft spacers are “B”, the next one is “C” and the two foremost ones are “D”.  They are placed close to the edge of the frame for maximum stability.  The laser char only needs to be removed from the fore and aft sides so that their surfaces are flat.  If too much wood is sanded off, I glue strips of paper onto the edge as a filler to prevent distorting the hull.
     
    The hull and deck were faired so there are smooth curves fore to aft.  I used a sanding block for this.  I did not fair the bulwark extensions (the thin strips of wood above the deck) to prevent them from breaking off.  This model has a significant camber to the deck.  Sanding sticks help getting into the corners.  You can see that the mast supports have been sanded down to match the height of the deck.

    Next up is planking the hull.
     
     

  8. Like
    tlevine got a reaction from thibaultron in NRG Rigging Project by tlevine - FINISHED   
    Everything depended on the size and type of ship.  This little ship only had a lower mast and topmast.
  9. Like
    tlevine got a reaction from hollowneck in NRG Rigging Project by tlevine - FINISHED   
    Everything depended on the size and type of ship.  This little ship only had a lower mast and topmast.
  10. Thanks!
    tlevine got a reaction from thibaultron in NRG Rigging Project by tlevine - FINISHED   
    Yes, the kit will have the lower topmast deadeyes.  And yes, they are smaller.  As I stated in my post above, "The diameter of the deadeye is 1.5 times the size of the shroud or stay it is attached to..."  The topmast shrouds are 3.5", in contrast to the lower shrouds (5.5").
  11. Like
    tlevine got a reaction from MEDDO in NRG Rigging Project by tlevine - FINISHED   
    Most kits come with deadeyes and partially completed chains.  Usually, the upper link (the link that goes around the deadeye) is pre-formed, with the bottom cut for insertion of the deadeye.  Wire is provided for the builder to form the other two links but the entire assembly has very little strength and the cut ends of wire are ugly.  The only way to make this assembly stronger and better looking is to solder the links closed.  I prefer silver soldering, even though regular soldering will give sufficient strength.  The benefit of silver soldering is that the metal is fused together rather than connected by a dissimilar metal, tin.  This makes it easier to bend the part without worrying about the solder joint breaking.  The downside is that there is a learning curve and the tools are more expensive.  Silver solder also blackens well.  There are also low melting point silver bearing solders (Tix) which can be blackened. 
     
    The measurements for all the parts of a British warship were determined by the Admiralty.  There are reference books that contain this information such as Steel’s Tables.  An easily read version of the tables is sold in the NRG store.  The main mast diameter is given on the plans as 18”.  Using the information from the tables, I determined that the main stay is 9” and the shrouds are 5.5”.   Lines are measured by their circumference. The diameter of the deadeye is 1.5 times the size of the shroud or stay it is attached to, in this case 8 ¼”.  A spreadsheet comes in handy in determining all the measurements.
    Let me start by saying that my metal work has a bit to be desired.  The chains are made from 1 ¼” wire, which is 22 gauge.  I temper the wire by drawing it through a gas flame until it glows red.  This makes the wire more malleable and removes any factory applied coating.
     
    The deadeye chain is the same length for all the deadeyes.  Make one and use it as a template for the others.  I wrapped wire around the deadeye, leaving long tails, and inserted this into the slot in the channel.  The tails were cut long enough to be able form the loop below the channel.  I removed the deadeye and applied a finish. 

    The lower links are all the same length.  From the plans I knew that the toe of the lower link is bolted 5” below the top of the wale and that its overall length was 9”.  Two T-pins were inserted into the soldering board and the wire was wrapped around them, with the cut ends on the side.  The middle link is different for every shroud because each is at a different angle to the mast as seen in the two pictures below.  The link becomes longer with greater angulation of the shroud.  You can see the difference in the shroud angles and how this would affect the length of the middle link.


    To determine the angle of the chains, I put masking tape on the hull above and below the channel.  A loop of rope was placed over the mast head and inserted through a slot in the channel.  The angles made by the shroud were transferred to the tape.  I dimpled the wale where the toe of the lower link and the lower preventer chain bolts will be located and removed the tape.

    A hole was drilled through the wale where the toe of the lower link would later be bolted.  The lower link and deadeye were temporarily installed. The length of the middle chains was determined by trial and error.  With the deadeye and lower link in place, I formed the middle link from rope the same thickness as the wire and transferred those lengths to wire.  I formed the middle link and soldered it closed, keeping the joint on one of the long sides.  Then I inserted the lower link through the middle link and soldered it. 

    A T-pin was pushed into the soldering board and used to form the lower link toe.  The lower link is also bent at the toe, allowing it to lay flat against the wale. 

    Finally, the wire for the upper link was passed through the middle link and  soldered.  The deadeye was inserted into the loop and the wire was crimped around it to fit into the channel slot, placing the solder joint in the slot camouflaged it.  

    And here are the ten chains, ready for blackening.  The blackening chemical did not damage the wood deadeyes. 

     
    After blackening, the chains were installed.  I have a piece of wire temporarily holding the lower link to the wale. 

    The preventer plate prevents the bolt securing the lower link from going all the way through the toe. It was made from square bar stock that was forged to the correct shape.  Mine are made from sheet brass, cut and filed to the correct shape.  Just like the middle links, they varied in length. The top of the plate makes a step over the bottom of the lower link toe to cover it. To determine the distance between the bolt holes on the plate, I measured the distance between the toe bolt and the previously marked lower preventer plate bolt and added the diameter of the wire the link was made from.  The sequence is shown in the drawing below. After they were finished, they were blackened and installed.  

    To hold the upper links in the channels, a strip of molding was placed over them.  Next up, the rigging begins.

     
  12. Like
    tlevine reacted to Mike Y in Beavers Prize 1777 by Mike Y - 1:48 - POF - Hahn style   
    Now it's time to build magazines and all sorts of decks and beams. For that phase an accurate depth gauge is essential, so I've let my brain overthink yet another tool 
     
    The requirements are:
    1) Soft plastic or wood to avoid scratching the model
    2) Nice looking and pleasure to use, that tool would be in active service for at least a decade.
    3) Ideally it should have a thumbwheel or a knob for fine adjustment. 
     
    I have a cheap plastic vernier calliper that satisfies the first requirement, but it does not have an knob / thumbwheel.

    Could not find any plastic callipers with a knob, unfortunately. The plastic ones are already rare enough, let alone with a wheel adjuster.
     
    Then I spotted a Lego set with a container loader ("reach stacker", to be more precise) that has a worm gear and tried to make an abomination out of it. It is surprisingly challenging to build a compact functional tool out of random lego parts, a whole puzzle of its own. Respect to people who do it on a regular basis!

    It kind of works, but the play and precision is not good enough for my needs. 
    So I gave up on the wheel adjuster requirement and went back to the simple "calliper on a gantry" setup.
    It was a nice warmup to recover some skills that I've lost over years of inactivity.
     

    This time I even got help from my little helper! She enjoyed cranking the mill  

     
    The resulting design has two parts - sliding gantry (no t-tracks, it is stable enough on its own) and a "calliper holder" that slides sideways on the gantry to allow the gantry keep contact with both sides of the baseboard.
    The bottom edge of the caliper is trimmed to a flatter profile to avoid hitting the keelson. Both ends of the calliper can be used for a markup to allow for a comfortable pencil positioning.
    The setup relies on three clamps to fix everything in position. These plastic clamps are a bit of an eyesore, maybe I will sidetrack again to build a nicer ones  


     
     
  13. Like
    tlevine got a reaction from Canute in NRG Rigging Project by tlevine - FINISHED   
    Yes, the kit will have the lower topmast deadeyes.  And yes, they are smaller.  As I stated in my post above, "The diameter of the deadeye is 1.5 times the size of the shroud or stay it is attached to..."  The topmast shrouds are 3.5", in contrast to the lower shrouds (5.5").
  14. Like
    tlevine got a reaction from hollowneck in NRG Rigging Project by tlevine - FINISHED   
    Most kits come with deadeyes and partially completed chains.  Usually, the upper link (the link that goes around the deadeye) is pre-formed, with the bottom cut for insertion of the deadeye.  Wire is provided for the builder to form the other two links but the entire assembly has very little strength and the cut ends of wire are ugly.  The only way to make this assembly stronger and better looking is to solder the links closed.  I prefer silver soldering, even though regular soldering will give sufficient strength.  The benefit of silver soldering is that the metal is fused together rather than connected by a dissimilar metal, tin.  This makes it easier to bend the part without worrying about the solder joint breaking.  The downside is that there is a learning curve and the tools are more expensive.  Silver solder also blackens well.  There are also low melting point silver bearing solders (Tix) which can be blackened. 
     
    The measurements for all the parts of a British warship were determined by the Admiralty.  There are reference books that contain this information such as Steel’s Tables.  An easily read version of the tables is sold in the NRG store.  The main mast diameter is given on the plans as 18”.  Using the information from the tables, I determined that the main stay is 9” and the shrouds are 5.5”.   Lines are measured by their circumference. The diameter of the deadeye is 1.5 times the size of the shroud or stay it is attached to, in this case 8 ¼”.  A spreadsheet comes in handy in determining all the measurements.
    Let me start by saying that my metal work has a bit to be desired.  The chains are made from 1 ¼” wire, which is 22 gauge.  I temper the wire by drawing it through a gas flame until it glows red.  This makes the wire more malleable and removes any factory applied coating.
     
    The deadeye chain is the same length for all the deadeyes.  Make one and use it as a template for the others.  I wrapped wire around the deadeye, leaving long tails, and inserted this into the slot in the channel.  The tails were cut long enough to be able form the loop below the channel.  I removed the deadeye and applied a finish. 

    The lower links are all the same length.  From the plans I knew that the toe of the lower link is bolted 5” below the top of the wale and that its overall length was 9”.  Two T-pins were inserted into the soldering board and the wire was wrapped around them, with the cut ends on the side.  The middle link is different for every shroud because each is at a different angle to the mast as seen in the two pictures below.  The link becomes longer with greater angulation of the shroud.  You can see the difference in the shroud angles and how this would affect the length of the middle link.


    To determine the angle of the chains, I put masking tape on the hull above and below the channel.  A loop of rope was placed over the mast head and inserted through a slot in the channel.  The angles made by the shroud were transferred to the tape.  I dimpled the wale where the toe of the lower link and the lower preventer chain bolts will be located and removed the tape.

    A hole was drilled through the wale where the toe of the lower link would later be bolted.  The lower link and deadeye were temporarily installed. The length of the middle chains was determined by trial and error.  With the deadeye and lower link in place, I formed the middle link from rope the same thickness as the wire and transferred those lengths to wire.  I formed the middle link and soldered it closed, keeping the joint on one of the long sides.  Then I inserted the lower link through the middle link and soldered it. 

    A T-pin was pushed into the soldering board and used to form the lower link toe.  The lower link is also bent at the toe, allowing it to lay flat against the wale. 

    Finally, the wire for the upper link was passed through the middle link and  soldered.  The deadeye was inserted into the loop and the wire was crimped around it to fit into the channel slot, placing the solder joint in the slot camouflaged it.  

    And here are the ten chains, ready for blackening.  The blackening chemical did not damage the wood deadeyes. 

     
    After blackening, the chains were installed.  I have a piece of wire temporarily holding the lower link to the wale. 

    The preventer plate prevents the bolt securing the lower link from going all the way through the toe. It was made from square bar stock that was forged to the correct shape.  Mine are made from sheet brass, cut and filed to the correct shape.  Just like the middle links, they varied in length. The top of the plate makes a step over the bottom of the lower link toe to cover it. To determine the distance between the bolt holes on the plate, I measured the distance between the toe bolt and the previously marked lower preventer plate bolt and added the diameter of the wire the link was made from.  The sequence is shown in the drawing below. After they were finished, they were blackened and installed.  

    To hold the upper links in the channels, a strip of molding was placed over them.  Next up, the rigging begins.

     
  15. Like
    tlevine got a reaction from thibaultron in NRG Rigging Project by tlevine - FINISHED   
    Thanks, Tom.  Sorry for the delayed response but I was on the road and without internet access.
  16. Thanks!
    tlevine got a reaction from thibaultron in NRG Rigging Project by tlevine - FINISHED   
    At this point videos are not planned.  There is more detail in the monograph and, if you purchase the kit, I would be available for questions.  The Guild hopes to have it available in 4-6 weeks.
  17. Wow!
    tlevine got a reaction from Nirvana in NRG Rigging Project by tlevine - FINISHED   
    The mast cap has two openings: a round one for the topmast and a square one for the lower mast head.  There are four eyebolts that extend all the way through the mast cap.  I raided my scrap box for a contrasting color piece of wood.  Both openings were made with a regular drill.  The square opening was then shaped with a chisel and the round one was enlarged with sandpaper wrapped around a dowel.  It will not be installed until much later.

     
    Although it also will not be installed for a while, I made the topmast next.  The dimensions of the topmast are determined by the diameter of the lower mast.  The lower end of topmast is 7/10 the diameter of the mast and the upper end is 11/20.  This will be a stub topmast as the actual length of this mast would be 8” on the model.  Its shape is more complicated than the lower mast.  The lowest section (the block) is octagonal, the next section is (the heel) square, followed by another octagonal section.  The upper part of the topmast is round, tapering as it goes to the head.  There are three openings in the mast; the middle one is for the fid (the rectangular peg which prevents the mast from falling between the trestle trees) and the other two are for sheaves.  The kit will contain a template for the topmast.

     
    Starting with a ¼” square dowel, I marked out the mast for the various transition points.  Using the 7:10:7 ratio for determining the corners of the octagon, I drew the lines for those two  sections.  The mast taper begins at the end of the upper octagon.  The blue line is the centerline and the red lines are the corners of the octagons.  Just as was done for the main mast, I taped off the square section to protect it from errant chisel cuts.  The pictures shows a completed topmast above a square dowel.  There is extra wood on the top and bottom of the dowel for ease of handling.

     
    I used a saw to cut a shallow groove between the octagonal and square areas on the corners of the square section (circled area).  This transition should stay sharp.  The lower octagonal section was shaped with a sanding stick.


    The upper octagon and round area were both shaped as octagons, without any taper.


    Another piece of tape was used to protect the upper octagon and the upper part of the mast was rounded and tapered. 
    After removing the tape, the transition between the octagonal and round sections and between the square and upper octagonal sections were smoothed.
    Making the holes for two sheaves and the fid was next.  The upper and lower sheave openings are in the octagonal sections and are 90 degrees to each other and 45 degrees to the fid hole.  The dimensions for the fid opening are one-third the mast diameter high and one-quarter the mast diameter wide, in this case 3” x 2.5”.  The opening was formed from multiple drill holes, squared off with a #11 blade.  The fid was made slightly smaller than the size of the opening and long enough to span the trestle trees.
     
    The sheave openings are 8” long and 1.5” wide.  I simulated the sheaves on this model.   These were trickier to drill accurately because they are on angled faces.  Here is how I made them.  The sheave opening was marked on both sides of the mast.  I put the mast in a vise, clamping it in the upper octagonal area, just above the sheave opening.   A small hole was drilled near the top and bottom of the sheave opening but I did not drill completely through the mast.  The mast was repositioned in the vise and the holes on the other side were drilled.  The holes on each side were enlarged to the correct width of the opening.  I did this slowly, working a little bit on one side and then switching to the other side.  The holes eventually met.  Then, using a #11 blade, a shallow groove representing the sheave was formed between the two holes and the “sheave” was painted.   The final step was to cut off the excess wood at the top and bottom of the topmast and apply a finish.


    This is how it looked installed. 


     
     
     
     
     
     
     
     
     

  18. Like
    tlevine got a reaction from Saburo in NRG Rigging Project by tlevine - FINISHED   
    The bit pins are 9” square posts.  The crosspiece is 8’ x 10” x 3” and connects the two pins.  It is morticed into the pins 3’ above the deck.  Shape the ends of the crosspiece as seen in the picture.  I raided my scrap box again for these pieces but the kit will contain the correct thickness of basswood to construct them.

     
    I used the previously drilled pilot holes to locate the centers of the bitt pins and lightly  traced the outline of the bitt pin onto the deck.  A series of holes was drilled inside the outline and they were connected with a #11 blade.  They were enlarged with files until the openings were just large enough to allow the bit pin to pass through them.  They will not be permanently installed until later to make installing the mast easier.

    This is how the model looks with everything temporarily installed.

    Other than installing the channels, the hull is complete.  Next, the wale was painted.  The hull planking was masked off above and below the wale.  I used three coats of artist’s acrylic paint diluted 1:3 paint to water, sanding with 400 grit sandpaper between coats.  I remove the tape as soon as the last coat has been applied to prevent paint adhering to the tape.


     
  19. Like
    tlevine got a reaction from Saburo in NRG Rigging Project by tlevine - FINISHED   
    As I mentioned before, the bit pins will be glued to the “B” spacers.  I measured and marked two feet (½” scale) aft from the aft surface of Frame 4 and nine inches (3/16” scale) inboard from the spacers.  These are the centers of the bit pins.  Small pilot holes were drilled up through the deck.
     
    I planked the inner bulwarks, starting at the waterway, using ten-inch-wide planks.  I applied a clear finish at this point.  The top of the bulwarks was sanded flat in preparation for installing the cap rail.  Simply turn the model upside down and sand the bulwark the way you did the base.  This also gives a fresh surface to glue the top rail onto.
     
    Templates were made to determine the shape of the rail.  This is how I made these.  Masking tape was run along the upper edge of the hull planking to prevent marking the wood.  The model was turned upside down and, hugging the side of the ship, a line was drawn along the top of the hull.  Don’t forget to mark fore and aft, port and starboard.

    The rail is 12” wide with a 1” overhang inboard and outboard.  I drew lines 1” (0.02”) outboard and 11” (0.23”)  inboard of the original line.  The picture shows the templated line and the overhangs.

     
    I cut out the templates with a lot of extra paper on either side of them because long, narrow pieces of paper are prone to warping.  They were glued to the 1/32” wood sheet.  I use either Elmer’s glue stick or glue spray that is not water based (3M-45) to help prevent warping.  Both of these adhesives can be removed with isopropanol and scraping.  This is another opportunity to check out your scrap pile for a piece of contrasting color wood.

    Cut out the rails and mark the undersurface with the side and orientation before removing the template.  Remove the template and round over the edges.  If you want a contrasting color for the rails, paint or stain them before installing.



  20. Like
    tlevine got a reaction from Saburo in NRG Rigging Project by tlevine - FINISHED   
    Next up was the deck planking.  I marked the center line on the top of the frames and installed “B” spacers between Frames 4 and 5.  These will be used later to secure the bit pins.  This ship has a king plank on either side of the midline, which is wider than the regular planking, 12” instead of 10”.   I shortened the mast partners  so the planks would land on Frame 4.  Just like I did for the hull planking, I used a pencil on one edge to simulate caulking and, because of the camber, sanded a bevel into the lower edge of the other side of the planks for a tight fit.  A row of 10.5” planking was installed on either side of the king planks.  The rest of the planks will be 10” but this allowed the edges of these planks to be aligned with the outer edge of the partners.

    I removed the partner to prevent it from getting damaged.  This is why it was only tack glued.  I used a four-step butt joint pattern for the rest of the deck planking. 

    The rest of the planking was installed, tapering the outermost rows to fit against the waterway. 


     
  21. Like
    tlevine got a reaction from Saburo in NRG Rigging Project by tlevine - FINISHED   
    The next  stage of construction was fitting out the mast partners, inner bulwarks, and deck.  On a real ship, the mast partners were made up from several pieces of wood.  For simplicity, I made the mast partners from single piece of cherry from my scrap box.  In the kit, it is made from two pieces of 1/32” basswood, with the two pieces oriented 90 degrees to each other for strength.  It measures 5’6” x 4’ x 3”.  The center of the mast is located 6” forward of the center point of the partners, to allow enough room for four eyebolts aft for securing the truss pendants and lifts.  It is not 100% historically accurate but compromises had to be made during kit design.
     
    The mast is 17.5” in diameter at the partners and is raked aft so the opening will be oval, not round, with the long axis fore and aft.  I began by drilling a hole smaller than the final dimension.  It will be finessed later.  Remember, you can always remove more wood...you can't put it back.  Then the edges and corners were rounded over.


    The waterway was made from two pieces of wood laminated together.  Because of the amount of hull curvature, I prefer to make a template and cut the outline of the bulwark onto a sheet of wood rather than edge-bend.  The template is very simple: a piece of paper which is gradually trimmed to the correct shape.  You only need one template since the two sides are mirror images of each other. The outboard edge of the waterway was traced onto the 1/32” basswood sheet and cut.

    Using a compass, a line was the drawn 10” inboard and the waterway was cut out.  I prefer to make all my marks on the undersurface of the wood, where they will not be seen.  All four surfaces were sanded smooth, keeping the edges sharp.

    Using the same template, I drew the outboard line on a second piece of basswood and cut it out.  A second line was drawn 4” inboard.  This was cut out and sanded but the upper-inner edge was rounded over.  The pictures show both pieces of the waterway.


    The first layer of the waterway was installed and because a template was used, it fits perfectly and without tension.  After the first piece was dry, the second narrow piece was added next to the bulwark, rounded over edge inboard. 

  22. Like
    tlevine got a reaction from Saburo in NRG Rigging Project by tlevine - FINISHED   
    Thanks everyone.  When starting this project I wavered between a dummy hull and a simple POB cross section.  One of the advantages to this approach is that it results in a nice desktop model.  The compromise is that certain lines, like the stays, are omitted.  
     
    It is time to plank the hull.  The kit contains enough 1/32” basswood sheet to plank the hull and deck.  I began the planking at the top of the bulwark extensions.  This made them less susceptible to breakage.  There are five rows of planking, followed by two rows of double-thick planks for the wale.  Below the wale, the rest of the planking is the same thickness as the upper part of the hull.  All the planks are the same ten-inch width.  The thin basswood can easily be cut with a #11 blade and straight edge.  No spiling necessary!  I put a slight bevel on the long edge of one side of each plank to get a tight fit between the planks and rubbed a pencil along the other edge to simulate caulking.  The picture shows the hull planked to the top of the wale.

    The wale is made from two rows of double-layer planking and will be painted black later.  I painted the edges of both layers with an archival ink marker before installing them.  After the first layer was installed, the hull was sanded fair.

    For the second layer of the wale, the exposed outer edges were slightly rounded over before painting the edges.  The second layer of the wale was glued to the first layer and the surface  was sanded smooth.  I prefer not to paint the wale until the rest of the hull is completed to prevent damage.   

    The rest of the planking below the wale was installed.  Because some of the plank ends did not land on a bulkhead, it was necessary to glue a scrap of wood on the inner side of the plank to secure it to the plank above.  In this picture, the first two rows lower planks have been installed. 

    After the last row of planking had been installed, I removed most of the wood below the bulkheads by shaving it down with a razor blade.  When most of the wood was removed, the model was put on top of a sheet of sandpaper and the bottom was sanded flat by moving the whole model back and forth.  In this picture, the wale has been dyed with a coat of archival ink so you can see the difference in thickness between the regular planks and the wale. 

  23. Like
    tlevine got a reaction from KARAVOKIRIS in NRG Rigging Project by tlevine - FINISHED   
    The NRG is an educational organization, dedicated to providing our members with the knowledge to improve the quality of their model ship building.  One of the most common problems model builders have is rigging their model.  Kit instructions are poor.  Often, the materials provided in the kit are improperly sized or the cheapest that the manufacturer could obtain.  We all know that blocks are not square!  I wanted to develop a project whose purpose would be to teach ship modelers how to mast and rig a ship without having to build a complete hull.  This model is a 1:48 scale cross-section at the level of the main mast of a late 18th century British sloop of war, Swallow 1779.  To keep the size of the model manageable and eliminate the need for a building board, the hull is cut off just above the waterline.  For the same reason, only the center portion of the lower yard and the lower part of the topmast are constructed.  Also, because this is a cross-section, certain lines, such as the stays and backstays, are not included.  My emphasis will be on demonstrating techniques to improve your rigging skills.  Skills that can be used on your next project.
     
    As this was developed as a teaching aid, certain shortcuts and compromises to historical accuracy were taken.  Wherever possible, I have used measurements provided by the plans and such authorities as Steel and Lees.  I apologize in advance to the master modelers who might criticize my shortcuts.  I have kept the use of power tools to a minimum.  The only thing that is outside the normal collection of hand tools is a serving machine.  The Guild hopes to begin selling this kit in the next few months.
     
    The kit contains all the materials required to complete the model.  But I always keep my scrap box nearby for those times when a piece of a contrasting color wood is desirable.  I will mention those times as the build log progresses.  Also, the build log is made up from the best photographs taken from three builds of this model.  A sharp eye will notice some differences in the wood color because of that.
     
    The hull is constructed in typical plank on bulkhead style.  There is a notched spine and notched bulkheads.  The laser cut sheet of one-eighth inch basswood ply also contains a template for the top and four types of spacers, A through D. 

    The spine and the frames are assembled as seen below.  Frame 1 is installed with the printing facing aft.  This gave me the option of painting the exposed bulkhead after construction was completed.


     
    The mast fits in the slanted slot between Frames 3 and 4.  To keep the mast vertical, support spacers are glued on both sides of the spine.  They will be sanded flush to the spine when the hull is faired. 


    To prevent the hull from twisting and to strengthen it, spacers are placed between each frame.  The three aft spacers are “B”, the next one is “C” and the two foremost ones are “D”.  They are placed close to the edge of the frame for maximum stability.  The laser char only needs to be removed from the fore and aft sides so that their surfaces are flat.  If too much wood is sanded off, I glue strips of paper onto the edge as a filler to prevent distorting the hull.
     
    The hull and deck were faired so there are smooth curves fore to aft.  I used a sanding block for this.  I did not fair the bulwark extensions (the thin strips of wood above the deck) to prevent them from breaking off.  This model has a significant camber to the deck.  Sanding sticks help getting into the corners.  You can see that the mast supports have been sanded down to match the height of the deck.

    Next up is planking the hull.
     
     

  24. Like
    tlevine got a reaction from Seventynet in NRG Rigging Project by tlevine - FINISHED   
    Most kits come with deadeyes and partially completed chains.  Usually, the upper link (the link that goes around the deadeye) is pre-formed, with the bottom cut for insertion of the deadeye.  Wire is provided for the builder to form the other two links but the entire assembly has very little strength and the cut ends of wire are ugly.  The only way to make this assembly stronger and better looking is to solder the links closed.  I prefer silver soldering, even though regular soldering will give sufficient strength.  The benefit of silver soldering is that the metal is fused together rather than connected by a dissimilar metal, tin.  This makes it easier to bend the part without worrying about the solder joint breaking.  The downside is that there is a learning curve and the tools are more expensive.  Silver solder also blackens well.  There are also low melting point silver bearing solders (Tix) which can be blackened. 
     
    The measurements for all the parts of a British warship were determined by the Admiralty.  There are reference books that contain this information such as Steel’s Tables.  An easily read version of the tables is sold in the NRG store.  The main mast diameter is given on the plans as 18”.  Using the information from the tables, I determined that the main stay is 9” and the shrouds are 5.5”.   Lines are measured by their circumference. The diameter of the deadeye is 1.5 times the size of the shroud or stay it is attached to, in this case 8 ¼”.  A spreadsheet comes in handy in determining all the measurements.
    Let me start by saying that my metal work has a bit to be desired.  The chains are made from 1 ¼” wire, which is 22 gauge.  I temper the wire by drawing it through a gas flame until it glows red.  This makes the wire more malleable and removes any factory applied coating.
     
    The deadeye chain is the same length for all the deadeyes.  Make one and use it as a template for the others.  I wrapped wire around the deadeye, leaving long tails, and inserted this into the slot in the channel.  The tails were cut long enough to be able form the loop below the channel.  I removed the deadeye and applied a finish. 

    The lower links are all the same length.  From the plans I knew that the toe of the lower link is bolted 5” below the top of the wale and that its overall length was 9”.  Two T-pins were inserted into the soldering board and the wire was wrapped around them, with the cut ends on the side.  The middle link is different for every shroud because each is at a different angle to the mast as seen in the two pictures below.  The link becomes longer with greater angulation of the shroud.  You can see the difference in the shroud angles and how this would affect the length of the middle link.


    To determine the angle of the chains, I put masking tape on the hull above and below the channel.  A loop of rope was placed over the mast head and inserted through a slot in the channel.  The angles made by the shroud were transferred to the tape.  I dimpled the wale where the toe of the lower link and the lower preventer chain bolts will be located and removed the tape.

    A hole was drilled through the wale where the toe of the lower link would later be bolted.  The lower link and deadeye were temporarily installed. The length of the middle chains was determined by trial and error.  With the deadeye and lower link in place, I formed the middle link from rope the same thickness as the wire and transferred those lengths to wire.  I formed the middle link and soldered it closed, keeping the joint on one of the long sides.  Then I inserted the lower link through the middle link and soldered it. 

    A T-pin was pushed into the soldering board and used to form the lower link toe.  The lower link is also bent at the toe, allowing it to lay flat against the wale. 

    Finally, the wire for the upper link was passed through the middle link and  soldered.  The deadeye was inserted into the loop and the wire was crimped around it to fit into the channel slot, placing the solder joint in the slot camouflaged it.  

    And here are the ten chains, ready for blackening.  The blackening chemical did not damage the wood deadeyes. 

     
    After blackening, the chains were installed.  I have a piece of wire temporarily holding the lower link to the wale. 

    The preventer plate prevents the bolt securing the lower link from going all the way through the toe. It was made from square bar stock that was forged to the correct shape.  Mine are made from sheet brass, cut and filed to the correct shape.  Just like the middle links, they varied in length. The top of the plate makes a step over the bottom of the lower link toe to cover it. To determine the distance between the bolt holes on the plate, I measured the distance between the toe bolt and the previously marked lower preventer plate bolt and added the diameter of the wire the link was made from.  The sequence is shown in the drawing below. After they were finished, they were blackened and installed.  

    To hold the upper links in the channels, a strip of molding was placed over them.  Next up, the rigging begins.

     
  25. Like
    tlevine got a reaction from Ronald-V in NRG Rigging Project by tlevine - FINISHED   
    Most kits come with deadeyes and partially completed chains.  Usually, the upper link (the link that goes around the deadeye) is pre-formed, with the bottom cut for insertion of the deadeye.  Wire is provided for the builder to form the other two links but the entire assembly has very little strength and the cut ends of wire are ugly.  The only way to make this assembly stronger and better looking is to solder the links closed.  I prefer silver soldering, even though regular soldering will give sufficient strength.  The benefit of silver soldering is that the metal is fused together rather than connected by a dissimilar metal, tin.  This makes it easier to bend the part without worrying about the solder joint breaking.  The downside is that there is a learning curve and the tools are more expensive.  Silver solder also blackens well.  There are also low melting point silver bearing solders (Tix) which can be blackened. 
     
    The measurements for all the parts of a British warship were determined by the Admiralty.  There are reference books that contain this information such as Steel’s Tables.  An easily read version of the tables is sold in the NRG store.  The main mast diameter is given on the plans as 18”.  Using the information from the tables, I determined that the main stay is 9” and the shrouds are 5.5”.   Lines are measured by their circumference. The diameter of the deadeye is 1.5 times the size of the shroud or stay it is attached to, in this case 8 ¼”.  A spreadsheet comes in handy in determining all the measurements.
    Let me start by saying that my metal work has a bit to be desired.  The chains are made from 1 ¼” wire, which is 22 gauge.  I temper the wire by drawing it through a gas flame until it glows red.  This makes the wire more malleable and removes any factory applied coating.
     
    The deadeye chain is the same length for all the deadeyes.  Make one and use it as a template for the others.  I wrapped wire around the deadeye, leaving long tails, and inserted this into the slot in the channel.  The tails were cut long enough to be able form the loop below the channel.  I removed the deadeye and applied a finish. 

    The lower links are all the same length.  From the plans I knew that the toe of the lower link is bolted 5” below the top of the wale and that its overall length was 9”.  Two T-pins were inserted into the soldering board and the wire was wrapped around them, with the cut ends on the side.  The middle link is different for every shroud because each is at a different angle to the mast as seen in the two pictures below.  The link becomes longer with greater angulation of the shroud.  You can see the difference in the shroud angles and how this would affect the length of the middle link.


    To determine the angle of the chains, I put masking tape on the hull above and below the channel.  A loop of rope was placed over the mast head and inserted through a slot in the channel.  The angles made by the shroud were transferred to the tape.  I dimpled the wale where the toe of the lower link and the lower preventer chain bolts will be located and removed the tape.

    A hole was drilled through the wale where the toe of the lower link would later be bolted.  The lower link and deadeye were temporarily installed. The length of the middle chains was determined by trial and error.  With the deadeye and lower link in place, I formed the middle link from rope the same thickness as the wire and transferred those lengths to wire.  I formed the middle link and soldered it closed, keeping the joint on one of the long sides.  Then I inserted the lower link through the middle link and soldered it. 

    A T-pin was pushed into the soldering board and used to form the lower link toe.  The lower link is also bent at the toe, allowing it to lay flat against the wale. 

    Finally, the wire for the upper link was passed through the middle link and  soldered.  The deadeye was inserted into the loop and the wire was crimped around it to fit into the channel slot, placing the solder joint in the slot camouflaged it.  

    And here are the ten chains, ready for blackening.  The blackening chemical did not damage the wood deadeyes. 

     
    After blackening, the chains were installed.  I have a piece of wire temporarily holding the lower link to the wale. 

    The preventer plate prevents the bolt securing the lower link from going all the way through the toe. It was made from square bar stock that was forged to the correct shape.  Mine are made from sheet brass, cut and filed to the correct shape.  Just like the middle links, they varied in length. The top of the plate makes a step over the bottom of the lower link toe to cover it. To determine the distance between the bolt holes on the plate, I measured the distance between the toe bolt and the previously marked lower preventer plate bolt and added the diameter of the wire the link was made from.  The sequence is shown in the drawing below. After they were finished, they were blackened and installed.  

    To hold the upper links in the channels, a strip of molding was placed over them.  Next up, the rigging begins.

     
×
×
  • Create New...