Jump to content

vaddoc

Members
  • Posts

    1,569
  • Joined

  • Last visited

Everything posted by vaddoc

  1. Thank you Mark. Well, I ve used epoxy for these joins, they are rock solid now!
  2. Welcome GumDrop!
  3. Very enjoyable journey Phil, just caught up with your build. 3/4 inch planks are very thin - what purpose did they serve? Vaddoc
  4. Looks a fine model Anthony and your CAD plans look very nice as well. Tally Ho is a good model to build with such a video library on You tube. A fully framed model may be somewhere in my future as well. Very interesting building method though, foam and fibre glass instead of planking. I presume it will be a static model, not RC. The only advice I could give you is that epoxy is very messy, chronic exposure leads to development of sensitivity and most importantly, that uncured epoxy cleans immediately with vinegar (epoxy is very alkaline and dissolves with acid). I always have a bottle in the shipyard as epoxy is a messy business. Could I ask, what was in the plans that you received from the Albert Strange Trust? Best wishes Vaddoc
  5. Thank you all for your likes and replies and taking the time to visit. @Jim Lad Jim it really makes a big difference, having the extra real estate around the saw but figuring out how to make the bench was a pain! @Bedford I could and should have used 0.8 ply but I had already finished the CAD design, it would need more frames and most importantly true 0.8 mm seems to have disappeared - most of it apparently comes from Russia. Good to know though that Scissors can cut it cleanly - never thought of it. Def one to remember. Now, lets talk Planking! I cut both garboards and steamed them in place. I ve never steamed pear wood but it responded superbly. I used my steam box to heat the planks - worked really well. I then scarfed the ends and secured in place with screws, The ends however had to be glued as the hull is not thick enough. Due to uneven surfaces I used epoxy - very messy solution but I do not think there is another. I think they came out alright! I really like planking. For this boat, I did not really spend much time planning, I just eyeballed it a bit. I have only marked half of the hull but I feel pretty confident. So let me share my method of spilling planks. First I use 1mm (or 1.5 I am not sure) cardboard to make a pattern. I am only interested in the side of the plank that meets the plank already installed. The foreword part of the plank has a lot of twist along its axis. To get the correct shape of the edge, cut a strip of cardboard roughly the correct shape and run dividers along the edge of the plank already installed. Then cut along the line with a knife Fitting the pattern, it is a bit off - mark the high spots Lightly sand the high spots, fit again, sand again etc. Now it fits fine Connect with the previous plank using cardboard and glue and move on to next segment. For the aft segment, the process is repeated - it just happened my rough cut pattern was spot on here! The plank is now completed - the upper edge that is Usually, I would just cut the plank as a single very long one but I would like to reduce wastage of wood. So now lets cut the individual segments. First we transfer the shape of the upper edge to wood, making sure we mark the positions of the frames. Then we measure the distances from edge of previous plank to line on frame and transfer over to wood Using a baten, we connect the marks making sure the line is fair Our plank segment is ready Next cut the plank, test fit, mark and sand any high spots, fit again etc. Later on we will need to also take into account bevels and also curvature of frames - either sand concave the inner surface of planks or sand flat the frames. Same process for middle and aft segments All segments are ready, just the scarfs are needed. The plank on the other side needs to be again cut individually as it is a close but not exact fit. On a different boat I would have spent more time arranging the run of the planks but for Hercules, I think this will work well - the plank shape so far does not seem horrible. I hope this was interesting! Till next time Vaddoc
  6. Phil, I presume this is a variation of contact cement/adhesive? I have not used it all for model building and there does not seem to be a good reason. It should also be gap filling so essentially looks like an epoxy substitute, without the mess. Vaddoc
  7. Thinner and retarder! Have a look round MSW, lots of posts in brush painting.
  8. Dear friends Sadly, I have not been able to post for three months - life with its ups and downs got in the way. But I kept on working in the shipyard. Now, this is my first POB model so I am figuring things out as I go. I made a simple jig to hold the keel straight and secure and some plywood right angle pieces. I did a lot of work trying to figure out a way to make sure the frames are square to the keel and installing pieces of wood to provide reinforcements and to connect all frames together. The keel was decidedly bent, it is the first time my epoxy laminates fail to produce a dead straight sheet. Brute force and a heat gun improved the situation a lot. Now at this time, I had to stop and deal with my benches, tools and garage. I was running out of space, too many tools squashed close together in a very full garage. Also, the Axminster disc sander I was so excited about proved garbage, not pleased with their customer support either. So, I made a new bench with the table saw built in. This took a lot of work (I do not have a mitre saw) and a lot of headscratcing too figure out how it would work but I am very pleased with the outcome. It is a very heavy solid bench. Then I took everything out of the garage, threw away lots of things, moved some light fittings, made a kind of loft and put everything back in. Huge amount of work but I am pleased with the outcome. Drilling and cutting bench and main work bench Sanding station. Yes, I had to buy the Proxon disc sander which is very nice I must say. The Axminster one is only good to rough sand the timber to make the bench. This fridge-freezer is taking up space but is also a nice place to put the air filtration system. Can be used for beer as well. Ok, so back to the boat. All frames were carefully installed and secured with thickened epoxy and bits of wood - very solid. The photo shows the hull and a crude base I made to support the hull during planking. This is when I discovered the keel was very bent. The way I designed the boat, the plywood deck had to go in first. This was the first true test of alignment that failed miserably. The deck, printed in an A3 sheet is true and straight and both ends of the hull were pretty off center line - a lot. So, I cut many of the connecting wood pieces, put longer ones in, lots of thickened epoxy and now I have a straight keel - at last! The deck has been installed with screws - this will be replaced with wooden nails but I will also epoxy it in place. In the next photos note the cut pieces and the longer ones glued on top. It does not look pretty but it is solid Ok, so now it is time for planking. I must admit, I do like spilling planks! Now, I intended to use plywood for the planking but this is not going to work, plywood is very unpleasant to work with and does not cut cleanly (it can but needs specialised blades) I do not really want to but new timber, so I looked at what 1.5 mm sheets I have. Left to right is maple. mahogany and pear. Now they are all great but the mahogany is simply too beautiful to use for a hull that will be painted. I think I ll use the maple to start with and if I run out of wood, use the pear. So now it is time to line up the hull for planking! There are some areas that need some consideration, the sheer plank, the top of the stern etc but more on this later. For now, It looked easier to just divide the hull in two sections. I first installed a very wide strip so it would sit dead straight at roughly the turn of the bilge and arranged it so that it would start at the middle of the bow and end aft at the point where the stern rabbet starts turning to horizontal So at this level, a plank would be dead straight. All planks bellow will curve one way, all planks above will curve the other way. I will plank the stern separately from the rest of the hull. Of course I had to reposition this line, then divided all frames (except for the 3 aft and 3 fore ones) bellow this level in 6 sections, put some battens (pear 2x3 mm) and drew the plank runs. Then of course I had to erase all marks, restart and produce slightly better lines. And then do it again. End result with all frames marked: Ideally I think a stealer would be needed aft but I am not going to be too pedantic. So lets make one of the garboards. 1 mm card used to make the patterns in sections - fitted and glued together. A very long garboard, and strangely very straight - I expected more curve I hope this is an accurate pattern. Now, ordinarily I would make this a single long plank but to minimise wood wastage, I am tempted to make it into three sections scarfed together. I also need to think what I will use to cut the planks - scroll saw and sanders or a sharp knife. we will see. On a final note, I was surprised to see that the printed patterns do not seem to fit as well together. I am not sure why but I cannot remember well the CAD designs as I last worked on them in January - I am sure it will work out though. I am also not too happy with my frame alignment - lots of fairing is needed but I may do it as I go along. Till next time Vaddoc
  9. Walnut is really not good for modelling due to interlocking grain - it tears and snaps unpredictably.
  10. Dear all I thought it is a good time for a short post, mainly one of frustration. Hercules true to the name is fighting me every step of the way and so far, is winning. I ve had difficulties with lofting, difficulties printing the patterns, difficulties gluing them. My laminates that usually come dead straight are bent. My computer died and now, my disk sander started playing up and is in for repair under warranty. But there is more. The new paper template came out in wrinkles. I suspect the spray glue I ve been using has gone bad as all the paper templates I ve glued so far are also coming off very easily. Strangely, the main pattern it is also off by a millimetre or so. The keel does not fully match the pattern - I really cannot figure out why. But there has been some progress despite the difficulties. After a lot of sanding and lots of scraping to remove the paper patterns and the glue residue, the frames are dry fitted. I started gluing the filler pieces, at this stage I will also cut the rabet. I do need to tidy up a bit but it is far too cold. Lots of things to do: cut the rabet, align the frames, epoxy them in place, glue the strengthening pieces and very importantly the planking. I thought I would get away with it by using flat sheets of plywood but I am not so sure now. I think it will need to be a proper planking job. I am not entirely sure how things will work out in the end but it is a fun project! Best wishes Vaddoc
  11. Phil, I have no doubt you are right. It will all be hidden and there is nothing that a bit of sanding and a bit of filler cannot correct. And indeed, a small piece of plank material is enough to just find the shape of the rabbet at that frame. I went through your log and of course your hull came out fine. Apologies, just going a bit overboard with CAD! Not to worry though, things will soon revert to normality and will start going pear shaped the moment I touch the ply with a chisel! Vaddoc
  12. I did a bit more work on the boat, so time for an update. @Mark Pearse Indeed Mark, I wanted to build something much larger and more of a proper ship. I actually looked into building Ed's Young America POF, but this would be an extremely expensive project which at this time cannot be considered. I bumped onto Hercules and immediately liked the boat - rest is history! (in the making) So, I cut the space for the propeller and removed some of the paper template so that the frames can slide into place - they do not actually, all the frame slots need filling as they are not wide enough. I also cut all the filler pieces for both sides and sanded all their bevels. These are needed to give support to the garboard planks as I will not be filling the gaps between the frames with wood. This went remarkably well, although some of the bevels had complex shapes. I only had to redo 3 out of the 30 pieces. This is a piece that had to be redone, the disk sander is not forgiving. I also sanded all the bevels in the frames. It went well but some fairing will be needed for the frames at the middle of the hull. These are all the pieces that need to be glued. This will need a lot of work: the paper template will need to be removed and the surface sanded or scraped to remove the glue residue and the pieces temporarily screwed in to check that the frames can slide between them. I think I ll use epoxy, it is a messy glue but has great gap filling properties. The elegant curves of the hull and frames, or alternatively Hercules after a dose of Delayed Mouse Making Potion. I am assuming that my CAD plans are accurate and that I ve cut the wood accurately. Of course neither is certain. The bevels seem reasonable though. I will need to cut the rabbet before I install the frames. I will first though glue on the filler pieces, as the angle of their bevel will help cutting the hull bevel. In theory, I have all I need to cut the rabbet accurately as all lines and the interaction of the planking with the hull are marked on the templates. However, chiseling plywood is difficult and requires extra sharp chisels. Take care all Vaddoc
  13. This is a very nice 1:1 model Bedford! I like the exaggerated sheer at the bow - it should handle rough seas (and lakes) well! Now, you are very right. This is the way to do it. The problem is that it is very difficult to escape the urge to closely follow the CAD plans with their scary accuracy - I have the illusion the end result will be as sharp as the plans! I ve been watching the Tally Ho videos - incredible what these guys do without using CAD, just with battens and pencils! The hull is very long and not dead straight. The frames will be pre-beveled before installation and even small deviations from vertical will cause problems - I know, they can be sanded or shimed. In the end it will end up with a batten around the hull but I assume the more fussy (or pedantic) I am with accuracy and alignment of the hull and frames, the less intervention will be needed later. This is my first POB boat and plywood responds very differently to solid wood. Having said that, it might very well not work - in all my previous boats in the end I ended up eyeballing the fairness of the hull! Vaddoc
  14. Happy New Year to all! I ve been busy these last few weeks so time for an update. Quite a few things going on. I could have actually done more but the temperatures have been consistently subzero so my garage is a rather unhospitable place to be in. So, I have finished laminating the pieces of ply I need but things took a funny turn. The laminated ply that was dead straight, warped. This is the first time this has happened to me. Still, with manual bending the opposite side and heat from a hair dryer, it went back to being almost straight. Now, I need a new bench for the garage. I already have two but my power tools are very cramped and it is difficult to work. For the new bench to fit I had to radically reorganize the layout of the garage - I am halfway into this. The new bench will have the table saw built in to sit flush with the top. I tried to design it by hand but finally returned to the warm embrace of CAD! These are the various groups of timber bits A big advantage of CAD is that it is very easy to arrange how many lengths of timber are needed and which pieces will be cut from each one When the weather allows, I ll get down on this. Now, back to the boat. I glued the template on a flat surface and after lots of thought a sprayed it with a protective spray. Ya, right. That did not work. I printed the pattern again and glued it on a different surface. I used custom settings and long lengths of paper cut from an A2 roll. However, the printer could not align the paper properly and the printout was distorted So I printed the pattern in A3 sheets and aligned them carefully. This actually worked fine, I used a piece of string and all lines are straight. I also did a lot of work to finalise the frames and other parts of the ship. We ll get to these later in the log. I glued and roughly cut the templates for the frames. There are many dots and lines for alignment purposes. I ll sand them to the lines with the disc sander when the weather improves a bit so I can have the garage door open for the dust to vent away - however sanding of all the bevels will take a long time. I finished cutting the keel template which again has many points and lines to allow alignment - each has been drilled through in the drill press with 0.55 mm drill to allow a 0.5 mm pin to go through. The mirror template has been glued on the other side - quite successfully. I have also prepared some extra pieces to glue on the keel to allow some more area to support the planking. These will also help in the alignment and support of the frames. All the bevels are already marked. I have ordered some different blades as I am not satisfied with the performance of the Proxxon scroll saw - but then again it comes with a very fine blade which struggles to cut the 6.5 mm epoxy laminated ply. So next steps: To cut, sand their bevels and glue the extra pieces on the hull. To sand the frames including the bevels. I think I will cut the hull rabbet now before even the frames go on - I have marked all the rabbet and bearding lines. One thing I could have done differently is the thickness of the hull. In my plans the hull is 3.8 mm thick - I did not want to make it thicker as in the plans, Hercules' steel hull is very slim. However, in the bow and stern, the rabbet will need to be up to 1.5 mm deep on each side so not much hull thickness left. I still am undecided on the planking. I think using large pieces of plywood will not allow a fair hull. I may need to plank the hull the usual way. I d like to cut the planks from plywood sheet but plywood does not cut very cleanly on the scroll saw- there are various other blades though. I could however use wood for the planks or a hybrid approach - use ply at the bow and the stern and wood in between. We will see. Till next time Vaddoc
  15. Very nice shipyard Hakan and the boat is coming along fine - very elegant. Love the beefy frames! Great news health wise mate! I looked for "out-of-place items" but the only odd things I could identify was the bike and the old oil lamp hanging from the ceiling. Take care Vaddoc
  16. Many thanks to all for your kind words! @Wintergreen I was hoping nobody would notice Hakan! Indeed my calculations were wildly wrong and a bit too late to correct - I had no more brass left and all were too firmly glued with CA. Not to worry though, Hercules will have a massive propeller which I can always make it a bit larger so between the two boats it averages out fine!
  17. Dear all Although I did a lot of work on Hercules, I have little progress to show. However, there have been changes and upgrades so an update is in order. I had to revisit the plans many times as I found mistakes that had to be corrected. My computer however has been playing up badly so I ordered a new one. I then thought I should not wait for Santa but instead should take things into my own hands. So out with the old, in with the new! Now, all plywood used will be laminated to make sure it is straight and rigid. In my plans I had set the thicknesses but this meant my laminates should actually be that thick and they were not. So I had to redo the plans to match the thicknesses that the ply ended up having. Now, laminating ply with epoxy is a dirty messy business but it went ok. This is how I do it - old textbooks, butane cylinders, anything heavy will do The ply came out very straight, this sheet is 900 mm long. It is straighter than it looks in the photo! I ve done a lot of work on the hull and the superstructure. I downloaded the Occre assembly instructions to get some ideas but generally I think I have massively overengineered and overbuilt the thing. Some pics from the plans so far, there are lots of things going on but best explained as the building progresses: An interesting twist is the propeller structure at the stern. Occre's solution is not very elegant - I think I can do better, we ll see. Before I make saw dust I need to make a new bench where the table saw will be built in. This will take time and money and I need to find the correct wood. I also need to finalize the plans into printable patterns. I intend to use 1.5 mm plywood to cut the planks. I am not sure how this will work, this boat's hull was built with steel sheets so it seems reasonable to use ply, provided it can bend both vertically and horizontally to follow the curve of the hull. Best wishes Vaddoc
  18. Dear all I think we can call this boat finished! So lets break down this final update: I finished the lobster pots and tied them up at the stern. I thought it would be fun to make some oil cans and a crate to put them in. I really wanted to add some fishing nets and an anchor but my initial attempts did not work out and I decided to leave it here and concentrate on Hercules. A few photos of the finished boat: I do need to make some kind of cradle for the model but this will be part of a much larger project, as I intend to space in my loft to display all my models. Many thanks to all for your company in this fun journey and my best wishes for a very happy and prosperous new year! Vaddoc
  19. Great to see updates Hakan! The boat looks beautiful and the scale is proper. Looking forward for the rest of the journey. Have a wonderful Christmas and a great New Year! Best wishes Vaddoc
  20. I just use these very common carpet blades, through away when dull. They work very well. 100 pack for £12. They leave a very smooth surface.
  21. Generally, 80 grit will remove a lot of wood fast but will leave grooves that will take some effort to remove- perhaps an overkill for delicate thin wood. 100 - 120 grit will remove material without leaving deep gouges on the wood surface. Progressive 150, 240 and 320 will leave the wood surface smooth. Going to 400 will leave a glass like surface, especially if the wood is sealed. So depends how uneven your surface is. Very important what sandpaper to use. Most are aluminum oxide but I ve only been using 3M 618 silicon carbide sand paper - wonderful stuff. Using a very sharp blade can also remove a lot of wood and leave a very smooth surface. This actually works very well. Vaddoc
  22. Just finished going through the log Phil, highly enjoyable read! Interesting to see the boat still lives on and after your stories, I am happy it does. Very nice job on her you are doing. I like the epoxy coating on the inside - I do the same with filler but thin epoxy is a much better option. Best wishes Vaddoc
  23. Just finished going through the pages George, nicely done. Really interesting ship and a very enjoyable log - you clearly are having a lot of fun! I think your choice of color for the hull works well. Best wishes Vaddoc
  24. Pear wood and Tung oil work really great, brings out the beauty of the wood. Get the polymerised Tung oil version, cures much faster.
  25. Yes, it does. I usually sand to 320 or 400, then apply the sealer using a brush. As it is water based it dries fast. One coat is enough but I may apply a second coat or sand lightly with 400 grit and then apply the second coat. After it is dry I smooth the surface with fine steel wool (or sand very lightly with 400 grit sand paper) and job done. The wood is very smooth and completely sealed. The sealed surface will accept any paint or finish. Very fast and easy process that can't go wrong.
×
×
  • Create New...