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Old 09-20-2010, 01:11 AM
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For a quality part you will need to make sure the hood is ultra smooth, as in a polished surface. Basically you will use the hood as a plug to build the mold. Apply several coats of mold release wax, and a release agent on the hood. You will then spray a tooling gel coat on the hood, followed by a layer of surfacing veil (to keep the fiberglass weave from showing through) and several layer of fiberglass cloth. Take your time and read up on how to properly hand lay glass. After this part is cured pop it out and you will have your mold. The mold surface must be very smooth, and fix any defects with gelcoat at this time. You will then lay your carbon up using epoxy the same way you did making the mold. You will want to tape the edges of the cloth on both side wherever you cut it to keep the weave from coming undone at the edges. After you have done several layers, you will let the part cure, and pop out of the mold. Then you will have to sand the outside surface, and have it clear coated to give it that glass like finish. Of course there is a lot more to this, and you will still have to build the inside structure seperately and laminate them together. Factory made parts are cured in an autoclave which supplies vaccum and heat, so there is no extra resin, and no air bubbles. You hand laid part will not be as strong as a factory part, and will be very expensive to pull off yourdelf. You can do it given the right budget, and time needed however. I routinely make flat panels using a sheet of thick glass waxed several times, and cut them down for flat panels in interior jobs, but even those are a ton of work and dont always come out nice. Good luck and be creative. Using the hood as a reverse mold will work, but the outside finish will have to be painted, as the surface will never look good enough to be bare.
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