AON

SKETCHING FRAME  –0-
  1. Copy the original plan sketch out and rename FRAME –0- 2. Remove all other Planes and Frames not relating to –0- 3. Measure the deck levels off the original plan and add lines to the Frame drawing to represent the levels   NOTE: all deck levels should have been drawn onto the Sheer Plan already to assure they shape/blend properly but I jumped ahead on this one because I needed to do something different at this moment.  As I will start from Station –O- when I do this I should be okay with this frame.   4. Measure the frame thickness at the deck levels at Frame –O- and add points to the Frame drawing to represent these thickness 5. Draw a spline line for the inside of the frame joining the few points 6. Add a series of new spline points to the spline and adjust them to reshape the inner shape of the frame 7. Sketch in the Deadwood on top of the keel 8. Sketch in Futtock Lines (where the frame joints will be).   These are done “by eye” guessing where the best break would be in a length of timber due to change in grain direction.   9. Layout the Scarph (scarf?) Chock, Hooked or Plain Scarf Joints.   Using the rules stated on pages 29 and 30 of “The Elements of Wood Ship Construction” by Curtis 1919 (length not less than 6 times the depth) I could not fit a plain or hooked scarf joint anywhere along the curved sections of the frame as the material became too thin.  These type joints seem to be meant to be used on less curved sections. Therefore I used the Scarph (scarf?) joint as referenced in "Historic Ship Models" by Wolfram Zu Mondfeld (pg 78) and "A Ship Model Makers Manual" by John Bowen (pg 77).   (Thank you yet again for the books!)   10. Copy the file out and rename it TEMPLATE Frame -0- and change all lines to be construction lines.  Use this template to begin all individual models for frame -0- 11. Copy the file out again and rename it CROSS CHOCK.  Change all cross chock lines to object lines. Add points on the curved lines and draw a splined object line over it.  Fully dimension/define the object lines and extrude the shape to complete the model of the Cross Chock.   (Fully define means to lock each point and line in position so it cannot accidentally float away in the future and create havoc and total chaos).   12. Repeat for all Butt Chocks and then for all Futtocks. 13. Assemble Frame –O- 3D model. 

I completed the finicky tweaking of all points on all section lines.
Had to make compromises, blending well and looking aesthetically pleasing won out over clashing dimensions.
 
This is the last batch of section line development sketches.
I am going to model section -0- frame because I need to do something different before I go back to more sketches... I am certain many following may be getting as bored as I am at the moment (plus my head hurts!).  
 
I think the momentary change will recharge my batteries!         
 
Alan

I completed the finicky tweaking of all points on all section lines.
Had to make compromises, blending well and looking aesthetically pleasing won out over clashing dimensions.
 
This is the last batch of section line development sketches.
I am going to model section -0- frame because I need to do something different before I go back to more sketches... I am certain many following may be getting as bored as I am at the moment (plus my head hurts!).  
 
I think the momentary change will recharge my batteries!         
 
Alan

I completed the finicky tweaking of all points on all section lines.
Had to make compromises, blending well and looking aesthetically pleasing won out over clashing dimensions.
 
This is the last batch of section line development sketches.
I am going to model section -0- frame because I need to do something different before I go back to more sketches... I am certain many following may be getting as bored as I am at the moment (plus my head hurts!).  
 
I think the momentary change will recharge my batteries!         
 
Alan

Try this site to calculate three points segments on a arc of a given radius.
 
http://www.mathopenref.com/arcradius.html
 
Then if you like draw a scaled down version and scale it up and see if it matches.
I would hope they do.
 
I am using SW2007 and do not yet know if I will have the same problem some time in the near (I hope) future.
 
Alan

I was trolling some forums of other hobbies, and ran across this home built vacuum hold down saw for ripping veru small pieces of wood. I am posting the link in case anyone is interested in the idea. I do think the concept has merit !
 
http://www.railroad-line.com/forum/topic.asp?TOPIC_ID=20046
 
 
It appears to work quite well. With a little bit of refinement, could likely be a great tool on the cheap !
 
- Joe

Progress to date
Stations 2 to 16 yet to complete
Once this stage is done I intend to review them all together and assure their shape is consistent with the original plan (nothing looks out of place or odd).
When I am happy with this I will add an internal detail sketch (deck levels)
One step at a time ... long way to go before creating 3D part models (templates)
 
Alan

Today's progress....
Managed to get from -O- to Y Foward Section Lines done.
I measured these off the Body Plan and compared to the Half Breadth Plan.
They are not too far off and blend nicely .. but it took some manipulation of a few sections to look right.
 
So far I am happy with the out come .
Next are the Aft Section Lines.
But not tonight     
 
Alan

It finally got stronger than me.
That little feeling that something just wasn't right
The dimensions from the half breadth do not agree with body plan
The -0- station body plan versus the stern and bow plan outer most waterline and top most end points should match but don't
The body plan aft points are inboard and the forward points are outboard ... and not at equal distances
I tried to keep my measurements as accurate as I could so I attribute it to a combination of original paper/pencil draughting error, original paper distortion over the centuries and of course ... me.
Although I only have four stations to go I have to stop and make the corrections choosing the half breadth as the plan to follow as closely as possible.
My only consolation is that at the scale my build will be no one will notice so long as the points are near and blend seamlessly.
 
Alan

Today's progress....
Managed to get from -O- to Y Foward Section Lines done.
I measured these off the Body Plan and compared to the Half Breadth Plan.
They are not too far off and blend nicely .. but it took some manipulation of a few sections to look right.
 
So far I am happy with the out come .
Next are the Aft Section Lines.
But not tonight     
 
Alan

Made further progress, plotted all intersecting points for stations (2) to 30 waterlines.
Completed upper outlines at the Aft or Stern Perpendicular and sections 29 and 30.
Need to complete (2) to 28!
I will post some images when done this stage.
 
Meanwhile here is a picture of my CAD workstation.
 
Can you spot the most important tool on the desk? 
 
If you picked the magnifying glass your wrong (it would be number 2)
 
Alan

Progress to date
Stations 2 to 16 yet to complete
Once this stage is done I intend to review them all together and assure their shape is consistent with the original plan (nothing looks out of place or odd).
When I am happy with this I will add an internal detail sketch (deck levels)
One step at a time ... long way to go before creating 3D part models (templates)
 
Alan

Progress to date
Stations 2 to 16 yet to complete
Once this stage is done I intend to review them all together and assure their shape is consistent with the original plan (nothing looks out of place or odd).
When I am happy with this I will add an internal detail sketch (deck levels)
One step at a time ... long way to go before creating 3D part models (templates)
 
Alan

Today's progress....
Managed to get from -O- to Y Foward Section Lines done.
I measured these off the Body Plan and compared to the Half Breadth Plan.
They are not too far off and blend nicely .. but it took some manipulation of a few sections to look right.
 
So far I am happy with the out come .
Next are the Aft Section Lines.
But not tonight     
 
Alan

Today's progress....
Managed to get from -O- to Y Foward Section Lines done.
I measured these off the Body Plan and compared to the Half Breadth Plan.
They are not too far off and blend nicely .. but it took some manipulation of a few sections to look right.
 
So far I am happy with the out come .
Next are the Aft Section Lines.
But not tonight     
 
Alan

Today's progress....
Managed to get from -O- to Y Foward Section Lines done.
I measured these off the Body Plan and compared to the Half Breadth Plan.
They are not too far off and blend nicely .. but it took some manipulation of a few sections to look right.
 
So far I am happy with the out come .
Next are the Aft Section Lines.
But not tonight     
 
Alan

Had a request for help interpreting a perceived problem... if you had read it I just deleted it as I figured it out.
It was a 3D illusion.
Alan

Making some progress.
 
BODY PLAN LAYOUTS
I needed to delete the reference points in all underlying planes (Station or Buttock Lines) because they showed through to the plane (station) I was working on and it was confusing.  I had to go back and clear up “dangling” errors as I had located my water lines to them.   Vertical and horizontal dimensions added to the water lines fixed this.
 
Alan

GOOD CATCH!
Shear vs Sheer ... it was a a typo ... honestly!
 
I drew the water lines on the sheer (!) plan.
As they are sloping straight lines I needed only the measurement at the stern and bow perpendiculars.
 
I then open station (or buttock?) line Y (just in from the bow perpendicular), projected the water line locations for "Y" from the sheer plan and inserted and located my points based on the water line height and measurements I had taken off the real plan PDF image.
 
Then I drew in the shape following the points and then finally mirrored it.
 
The results are below.
 
I now only have 30 more to go!
 
You are right though regarding "proving", and I still have quite a bit to fill in on the sheer plan.
 
Alan

BREADTH PLAN LAYOUT STEPS
1.       Draw each station line
· As there are quite a few at the same distance apart (5.3 ft) this can be done quickly with the array command
· The first line must be anchored and fully defined to make the others fully defined.
If it is not anchored/fully defined the line might accidentally wander later on and cause endless grief
When the line or point are fully defined they change colour from “BLUE” (free to float around) to “BLACK” (locked in place).
2.       Anchor one end (coincident mate) of the station line to the shear line (centre line)
3.       Lock the station line in the vertical position (vertical mate)
4.       Locate its spacing with a dimension to anchor the spacing
5.       Insert "points" onto the station line (these look like * an asterisk)
6.       Anchor each point (coincident mate) to the station line
· If you pick all points in one row and mate them as vertical and then pick one and mate it as coincident to the line they will all lock into place quickly
7.       Anchor the distance with a dimension as recorded off the actual plan from the shear line to the point. If the point does not change from blue to black it needs to be anchored as I missed it.
8.       I “exit sketch”, “rebuild” and “save” after every set of station points has been completed.
9.       When two points lay directly over each other I add the unused point outside the plan but do not dimension it. If for some reason I might need to tweak point locations to smooth out lines I might need that extra point (I could just add it later but as I am doing them now…. Why not?)
10.   Once all points are plotted and double checked I drew spline lines joining the dots (or asterisk type "points").
· NOTE TO SELF: next time do one set of points for one line at a time and draw the spline before going to the next set of points.  Trying to figure out which points went with which line was a bit of a head scratch in some tight areas. Of course this means more work anchoring each individual "point"
· A couple of the lines seem to be off as compared to the original plan.  Likely the reference point locations need tweaking.  I will wait to get the body plan done before I do any adjustments.
11.   Once all lines are in I mirrored them just for show.
 
 
Now on to the Shear Plan.
This should be quicker as I'll just show the lines for now and get the internal details later.
 
Alan

Work on the aft deadwood is well underway, also started the sternposts.
 
Ben

Small update,
 
Stem Pieces, Lower and Upper Apron and Fore Deadwood completed and glued to the keel.
I used some bamboo treenails and a #65 bit to add some heavy reinforcement to these pieces
as you can see.
Now I need to do the tapering up/down from 14" at top to 10" and the keel.
 
I have started making the aft deadwood pieces from 15" stock.
 
ben

Making some progress.
 
BODY PLAN LAYOUTS
I needed to delete the reference points in all underlying planes (Station or Buttock Lines) because they showed through to the plane (station) I was working on and it was confusing.  I had to go back and clear up “dangling” errors as I had located my water lines to them.   Vertical and horizontal dimensions added to the water lines fixed this.
 
Alan

Making some progress.
 
BODY PLAN LAYOUTS
I needed to delete the reference points in all underlying planes (Station or Buttock Lines) because they showed through to the plane (station) I was working on and it was confusing.  I had to go back and clear up “dangling” errors as I had located my water lines to them.   Vertical and horizontal dimensions added to the water lines fixed this.
 
Alan

Making some progress.
 
BODY PLAN LAYOUTS
I needed to delete the reference points in all underlying planes (Station or Buttock Lines) because they showed through to the plane (station) I was working on and it was confusing.  I had to go back and clear up “dangling” errors as I had located my water lines to them.   Vertical and horizontal dimensions added to the water lines fixed this.
 
Alan