robbovius wrote:GonzoRacer wrote:Cardboard is cheap, or even free if you scrounge around behind the grocery store...
I'm planning/plotting a hood for my car, and thinking along the same lines. I've been folding up pieces of cardstock and such thinking I'll do "life size" in poster board next. Might take the poster board pieces to the fab shop and let them do the cutting! (That way it might even wind up being square and have straight edges!)
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JDK
y'know, there's this construction method from the experimental aircraft world, called, "Taylor paper/glass" where forms are made out of heavy duty craft paper, and then glassed. I've actually been thinking of doing what you mention for the rear boat-tail on the B-3, simply because I know forming the compound curves in sheet aluminum will be difficult. I'd already done a mockup in posterboard, way back in the summer of '12. just sayin'.
That's popular in some circles of skin on frame kayak building as well. Some others use polyester shrink fabric and aircraft dope or polyester resin. If I'm making decorative panels paper and glass are fine. I've also been known to pull 6 mil poly sheeting, aka painters drop cloth, over a frame and lay glass on that.
If I'm doing structural or impact resistant I lean toward wood cored panels with 8 oz glass cloth on both sides.