Re: One sheet boat idea model
Brian, regarding posting screenshots from QCAD, you might want to pick up the free CutePDF application.
It installs as a printer on your system, so when you print from QCAD you can chose CutePDF for output and it will generate a full quality pdf file.
You should then be able to post that. It will be pan/zoomable so even tiny dimension and notes printing is perfectly clear.
- I added some more pictures and drawings to my picture folder with my latest version of this one sheet boat. I added in a transom frame to give a place to attach the sides and bottom better. I also shortened the frames to allow an inwale without notching the frames.
I'm still working on the design and waiting to get a sheet of plywood. I plan to use underlayment plywood since it is available and cheap locally and I'm not real sure how good this design will work.
I'm debating on using PL Premium glue or epoxy. I will likely go with the glue and possibly polyester resin to keep from investing too much in this still untested design.
Brian in PA
- I just found a message from KEN in my spam mailbox and thought I'd repost it here since it doesn't seem to have showed up on this group and others may be interested in it. If it was meant to be private, let me know and I'll delete it but it probably just got misplaced.
I'm also going to post the attached picture he sent in my photo album for others to see. It's not my pictures and again, if I shouldn't have posted them let me know and I'll delete them. I'm pretty sure it is not a one sheet boat but thought it was worth saving.
My underlayment that I plan to use is the 3 ply plus 2 very thin veneers. I used it on a Summer Breeze boat and it is holding up pretty good. There is a little bit of delaminating or bubbling in a few places but I think if I had sealed the edges better that may not have happened. It was around $20 per sheet so the cost was not bad for a cheap boat. I probably wouldn't use it on a bigger, more expensive boat but for a cheap boat it seems to work.
Brian in PA
Here's KEN'S messages:"underlayment" I'd already learned.. theres a single core type with veneers I consider junky, and theres a Chinese meranti luan that has 3 core lams then the veneers for a total of 5 lams, real good!
the meranti stuff has a bright pink glue I've boil tested, it passed being boiled 1/2 hr really well.
the 5 lam slightly thinner but lots more rigid, like a micro plywood. my little electric boat is completely skinned with the stuff after the skeleton frame was built (photos). there was no "plan", I just started with its frames, then stringers, chines, gunwales, etc.. even the steering wheel is made from the same type of luan laminated up (fun with a router).
check out what "FLO-MO" has done with one sheet.. http://flo-mo.weebly.com/one-sheet-boats.html
"little sailor" and "OS Core Sound 92" are pretty cool, slightly complex and very little waste.
in his two sheet section at the bottom, is "flywood" from two sheets, near 16 ft long canoe.
some details about building are left out, but if you've built you know, it'll require a good keel strip,
strong filleting between bottom and sides, laminating up strong gunwales, fiberglassing it all..
most construction methods and tips can be picked up reading Hannu's Boatyard site a couple times over, small zipties are great temporary stitching for filleting, he uses epoxy and flour mixed..
its not a one sheeter, but I want to try my hand at building FLO-MO's 2 sheet flywood canoe,
using polyester resin for fiberglassing (less UV sensitive than epoxy that needs paint)
so the wood can show through (is called "bright finish") might be pretty sweet looking.
and another one:forgot to mention, my own woodworkings, I use 1" and 1-1/4" drywall screws a LOT as temporary clamping, with small squares of the 5 lam luan so the screws heads dont make divots.
for the glue itself, titebond type3 waterproof wood glue whenever possible,
attaching panels to stringers, chine logs, gunwales etc.
after sanding, covered with tape cloth and resin, you dont see the screw holes at all.
(they get resin packed into em by the squeegee paddles)
-note- on the electric runabout, taped the seams first, then the bottom cloth overlap wrapped up the sides about 4", and the cloth sides overlapping wrapping onto the bottom the same, so the chine logs got covered total of 3 layers cloth, 6oz "tape" (4" wide), 6oz bottom cloth, 4oz sides.
from the chine corner, 2" is 3 layers thick, 2-4" is 2 layers thick, then panel main being 1 layer.
more protection to where the boat is most likely to get bumped!
the bow point got 4" then 7" then sides overlapping each other (6+6+4+4)
and the bow's bottom point..for overlapping everything, might be 7-8 layers thick total.
I figured sometimes it's gonna get nosed into a beach, sand and small rocks etc.
on another project, simplicityboats one sheet mini sharpie, I used long -twigs-,
about 3/8 x 3/8, for inside chine logs, using zipties through small holes to pull em in tight.
they werent big enough to use screws that wouldda just split em.
the twigs had to be small to follow those curves without breaking (bottom to sides).
fiberglass resin after, when taping the seams, filled the holes left behind from the removed zipties.
the FLO-MO guy uses 2" package strapping tape outside, epoxy tape and filleting inside first,
then removes the strapping tape, sands then covers the outside in cloth and epoxy..
I cant remember the forum address where he details his building methods, everything he cuts out is done with just a utility knife scoring repeatedly until the panel is cut through (no saws?!).
-theres sure a lot of ways to skin a cat!