Homemade fiberglass molds?
Years ago JC Whitney used to sell 1940 Ford sedan style replacement hoods for VW Bugs. They looked very cool but they are no longer available, and no one else seems to make them.
I was thinking about trying to make one from fiberglass as I have at least some little experience with using it, but the problem is that there is, of course, no OEM type hood to use as a mold. I understand that some folks have made custom parts by making a mold from wood and chicken wire. I would probably try to build it up on the existing VW hood (as I doubt the part would add much weight), or maybe I could cut out the center once the part is attached.
My main concern is in actually making the mold. And are there any websites about making such custom molds, or has anyone here done something similar? Also, does fiberglass resin stick to bare metal? Any advice at all would be appreciated! Thanks!
There are a number of books and such on making glass parts..google is your friend on that..most of the work is in making the plug from which the mold is pulled..if you do a good job you can have a salable part..the plugs i made were done with plywood formers and then planked with strips of wood which was then sanded smooth filled and shot with gel coat. we then laid up the mold on that..
Look at the new International's, WOW! :D
Fiberglass molds can be a lot for work but very rewarding. I have done a few and you learn quickly that it is very much about the details. The mock up part has to have a mirror finish like you could use it on the car. You cannot have pin holes, blemishes, it must have a mirror finish. I paint mine with single stage enamel. Here is one I did for an intake duct:
Basic shape with formers:
Fileld in and shaped with foam; in this case expandable foam. I have also used balsa wood; plywood for vacuum formed molds:
Fiber-glassed, finish glass smooth, painted with automotive paint:
This one laid up in 2-part mold on an old aircraft window. Glass is good too for separation:
This is a great web site for mold building. They not only have supplies but great how to videos and books. Here is an online tutorial. This can be a very time consuming project. It is all about the details!!
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