Philthy wrote:I'm currently leaning towards sandwich walls 1/8" ply on both sides with 1-by sticks and 3/4" rigid foam insulation inside, using PMF on the exterior. This is where the questions begin. If I go with PMF on the outside, does it matter what kind of plywood I use on the outside? I was planning on using 5x5 baltic birch at least for the roof and hatch since the tear will be 5' wide, but are there any cheaper suitable alternatives? I think I might have started looking at baltic birch when I was thinking about making it a woody.
booyah wrote:When I did my build the largest costs where
Doors $600 (local pickup Vintage Tech is only an hour or so away)
frame $500 (NT)
and a bunch of miscellaneous stuff (wood glue, fiberglass tape, screws, bolts, lights, electrical stuff, etc etc etc)
Grand total about $3000.
I ran it very much as a "Just in time delivery" system. Built frame, licensed it, bought wood, built base platform, bought doors, fan and hinge. Built body, bought epoxy, lights etc. The goal was to have whatever I needed arrive the day I was ready to start using it. IE when I went to cut the profiles, I needed the doors to make sure they would fit. When I wanted to do the roof, I needed to have the fan to properly size the fan box.
That way I never really felt the full expenditure.
Philthy wrote:Awesome, thanks for that breakdown, that's really helpful. As long as I stay around that budget I should be fine. Is there anything you'd do differently next time around?
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rowerwet wrote:I carry a collection of kayaks on my teardrop roof so I know that foam has plenty of strength.
rowerwet wrote:Any deformation in the foam will spring back with time and heat.
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