It's just big sheets of insulating foam from a DIY or builder's store. You want the pink or blue stuff, not the white bead foam.Coops93 said:where would you get the foam for that? i think i may be able to make a kit outa like kevlar at my school if i can just come up with the mould for it. good find on the site.
Make the positive mold out of foam, cast a glass part off it, and then build a frame around it to turn the glass part into a negative mold. Cast your poly parts off the "inside" of the negative mold. But I've never done any work with poly so I'm no expert on the rest of the process.Blaque_Out said:How would we be able to use polyurethane for this instead of fiberglass?
Why would you take the foam out, wouldn't you just want to leave it on there?driver found said:Shaping the foam *is* coming up with the mold. He didn't explain the process very well on his site, but you're basically shaping the foam into the shape you want, covering it with a release agent (he used aluminium foil), and then modling the fiberglass over it and removing the foam afterwards. You could use this process to make any body kit part, not just front lips.
I know for a fact that clear liquid epoxy will eat up styrofoam. Its pretty interesting to watch as well. As far as other epoxies like the one used in fiberglassing, im not quite sure, but I'd assume they are stronger than a liquid epoxy.driver found said:
Yes, Fiberglass resin will eat foam, at least the pink insulation foam from Home Depot. I used that same technique as that website to make a Viggen style rear spoiler a few weeks ago. It came out well but looks home made. That hardest part about making your own parts is carving the foam. It takes a long time to get it symmetrical and smooth enough so it doesn't look like crap.Blaque_Out said:As far as other epoxies like the one used in fiberglassing, im not quite sure, but I'd assume they are stronger than a liquid epoxy.