you could make a mold out of anything slippery that you can form. I would probably use wood cuz im good with wood. (carpenter.)

 

my friends making a fiberglass hood and i'm helping him so heres what we're doing.

first we used his old hood, and sprayed PVA on it, pva is a sort of plastic dissolved in alcohol so basically you spray it and it turns into a very thin sheet of plastic. like a very cheap plastic bag.
after you do that and it dries, then you stick a gel that hardens to get all the detail and then after that, you lay fiberglass and resin in layers etc after you think its solid enough. you either rip the fiberglass off from the hood or invent some sort of brace for the fiberglass so it holds its shape. ie that expanding foam + chicken wire etc.. you can pop the hood off from the fiberglass becuase you used the pva which allows for sepearation. its easier to tear a plastic bag then resin bonded to metal. after you've ripped off the fiberglass. then that your mold and you make sure its all good and prep it and then you do the whole process again in reverse to make the actual hood.
those instructions were for a hood but i'm sure you can think about them and probably do it for just about any other part on your car and substitute materials appropriately.

good luck

 

thanks, but not really. I'm asking how to make molds because you _can't_ really make molds out of anything in particular.

what about plaster? is that any good?

 

sounds like some helpful tips. where can you get this PVA stuff? Walmart? local hardware shop?

 

Anything can be glassed.

 

Naw dont do it .. then it start chping and crap

 

you can get this pva stuff on, 1, the internet, and more likely 2, specialty shops around the area if you know a place that does fiberglass boats and stuff. all you have to do is ask, if they don't have it. they'll point you in the right direction. do some research on the net to see what pva is and what it looks like so you don't look like a moron when asking for it. you get more respect like that, almost in any situation. theres a pva thats made by dupont. so just do a search on them words.

 

plaster is a fine idea, so would be bondo. Wood is fun for me. All you do is coat it with like vaseline or crisco or vegetable oil and go to town on it. Basically after its out of the mold you use glazing gel or bondo to clean it up and make it right. gl, its not too hard.

 

holy gay-rights-activism does that sound gay.