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Seems make the most sense both aesthetically and practically to make the 'inner keel' flush to the exterior and make a keelwide continuous flatspot - ie no ridge. That way you can fully glass the...

If the rod is ever reversed to make a pry 'clamp', then it would be worth considering - as is, the ends are in compresssion. But for the usual application (ie the clamp shown is not designed to also...

or can you borrow a biggish mirror or black backed window and light the stern while viewing from more forwards?
Stretched reflective (or any bright) tape might be an easier 'batten' to lay down (and...

Wet it out with low temp epoxy, put it in the bag, attach to anchor and 100' of line with buoy, and chuck it in 75' water. Come back a few days later, heh heh.

if you turn on buttocks and waterlines (make them at whatever intervals you wish), reference lines will be part of the output.

In linesplan view, choose to export it to a dxf file. Either in your cad program or by asking your printer, print off the overlaid front and rear (if that's how you set it up) stations/sections only...

Yes, as stated in post #3. However instead of a jigsaw, a cutting method with more control is likely used such as razor knife, pull saw, router, or cutawl - or I guess, any cutout method could be...

If a boat is defined by how well it bashes and scrapes into land and obstructions - then they are limited if wear and tear isn't desired to show.
If a boat is defined on how well it behaves in the...

These kayaks are setup on frames separated by the order of 12" (300mm) or so depending on the design. And on these frames is built the background field of strips where essentially the kayak becomes a...

And/or use with the dev plates text file output instead for exact coordinates of the plates. However, I believe that 0 height is reset for each plate so might not follow the grid - might be easier...

To my eye, gain length is intimately connected to visual plank width and secondarily related to gap size.

I don't know what general rules to this would be, but I would venture minimum 4x plank...

With all due respect to that essayist, I think what’s said there is being less than straight with you.

It reminds me of an old story my granpappy shoulda told - about screwdrivers brought to...

So here is part of the process previously described. For reference the centre of the image is the strake below the sheerstrake, looking from the stern. The red lines both thick and thin with...

Nick, I was aware of surface rendering it’s just that I didn’t understand that you were showing the interior (upper) lines, but with exterior surface treatment.

As you say, this approach may...

As the drawings looked rendered, I just automatically assumed that they were showing the exterior of the boat’s lower plank edges rather than from the inside showing the inside plank edges at the...

Nick,
I hope you don't mind, but as I have a whole bunch of coble drawings I decided to modify a copy into both a buttjt and a lapjt schematic of your boat. This is just a schematic (and for...

Don't get discouraged as you are already there - it's just a matter of learning the moves. Make sure you make a copy so you don't screw up your original and then play around like crazy with what you...

in that case, I can think of 3 ways to do it:

1)make a copy, split the alternating upper planks enough times to reach the offset while using markers to keep track of your shape. Then dxf off...

It would be nice if it was that easy, but lapped planks lie at different angles than buttjoint planks and therefore will give different developments to each other. The differences might be able to be...

O.K. for fun:

I wonder some of the difficulty comes from one’s own feelings for what the definition of restoration should be . . .
If you remove original frame #3 and throw it away after...

I think Thorne nailed it at the top of the thread – it depends on the definition of the word. If restoration is the only word used in vessel intervention, then everything is a restoration.
...

very cool, but in those cases the rear deck is flat and the coaming can be separate with no shape change. With the peaked rear deck like your's, a structure has to be there intitially which then...

Cockpit outfitting should be fairly well enabled by the ctr front deck stringer as well as the substantial deck cross beams - that's if you don't mind the addition of foam outfitting to your specs....

As the cockpit region in most skin kayaks is a discontinuity in the deck structure, so longitudinal is provided elsewhere. The wood members providing the longitudinal stiffness are the 2 gunwales,...

can you lock the mirage in a vertical position so that it could double as a ctr board?

if you can set your rudder and have a lee or ctrboard, there also is paddling.

I don't have a lot of technique to fall back on although I do have a spectrum of scrapers and sanders. So for me, and for flat and convex surfaces - the tool I reach for first is a largish (10-12")...

Possibly, but video showing the vessel rearward movement against current, quick exhaust, movement reversal to forward and crew escape, contradicts those suggestions.

The intitial state looks to be current flowing diagonally to the right, ie not directly perpendicular to the barge. At the moment the video starts, the tug is going backwards: at the end the tug on...

It’s actually just another ‘traditional’ edge-join planking method that has been used in many parts of the world:

Possibly one of the earliest/easiest straking methods was the mounting of a...

Dassault systems draftsight is free and is a fairly capable autocad substitute.
http://www.3ds.com/products/draftsight/free-cad-software/ ( edit: I now see draftsight has already been mentioned...

A small parallel arm, variable speed scroll saw will be the best for cutting out the sections or forms. More useful than a bandsaw as they can make internal closed cuts and provide possibility of...

If you gain or rabbet the garboard (or the pair) to nothing at the transom , the 13mm gap (1/2") is reduced by the 6mm thickness to 5mm instead of 13mm - big difference to the issue. A little heat...

Well - I sit down to hopefully read some continuing discussion about this subject only to find that senior and established figures in this boat world regard my (and other similar) responses with...

Your building and motor approach sounds reasonable to me. Just be careful about floatation.

As far as a non-traditional line tracing approach, take a pic of your linesplans and project them...

The likely reason you are getting a few short responses needs some reading between the lines. The boat you wish to convert to SOF implies the use of an outboard motor. SOF's with an outboard are not...

Paul Montgomery wrote

Great skins for SOF kayak models are model airplane iron-ons:
1)fabric (it's a real fine fabric with an iron-on coating) for a great SOF nylon/polyester skin simulation....

Bending plywood was epoxy/glassed for this ww kayak's deck. Panels were prestained and epoxy sealed before bending/assembling. Contrary to what I heard also - no noticable soaking/wt gain than for...

and as the builder you know how to fix whatever gets loose.

That boat is so well built for it's size, that I'd go frame to frame, inwale to a new horiz. stringer 2" (50mm) off the bottom (to...

Simpler is to forget the groove and drill sideways thru the keel front, thread bungee, make it loop, which then hooks over the bow stemtop. The bungee/line/web will seek its own hypotenuse. Heck,...

or put a hinge on the top of the bulkheads, a groove down the stem, and a bungie attached at the hull-keel front terminus that latched to a jam fitting at the bow-stem top:



1)unhook and fold...

If measurement is involved, another odd idea is to add a bunch of lead at the transom, then a rear deck so the boat floats at a steep enough angle (and no water gets in) so that the LOA matches your...

If finally you have to cut it, maybe choose to cut the bow as the boat will balance similarly, but:


-before cutting, glue the new bow bulkhead in place so everything keeps shape
-then glue...

or forget the inserts whether wood or f/g, and scarf the pieces together in either of 2 ways:
- since the pieces are from separate masts, from the equal diameter point of the smaller tapered mast...

typically the rudder would angle back at some angle (say30-45deg) and be slightly balanced (and breakaway at the top or bottom depending on the mount/tiller approach to eliminate damage). As the...

Not asked, but an alternative would be to side mount a rudder on the rear quarter. Then no appreciable change to existing boat stem geometry or existing aesthetic.
A simple, effective, traditional...

Well, compared to Carlotta or the like, those boats wouldn't even pass muster when they came out the door. My comments are about getting a serviceable painted wood boat with repair rather than the...

There are still all 16 of them and the opinion at the yard is that they are junk.

However given the comments, I was quite amazed at how good condition they were still in: The worst have highly...

from another board - as until recently Dave posted much good advice here as well:

"It's with great sadness that I let everyone here know that AstoriaDave has for some time (since 1987) been...

similar to wardd's, but cut a negative of the section shape in the edge of some scraps equal to the number of clamps, and clamp the scraps that in turn trap the quarterround in place on the form or...