over fender mold need help


over fender mold need help
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bridgeport13b
bridgeport13b
bridgeport13b
posted 8 Years Ago HOT
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Very off topic project I am doing but I am trying to replicate some over quarter fenders for the rear of my 94 rx7, I recently bought the rear over quarters a month ago and they just showed up, anyways these panels are 1100 shipped from japan and I need two sets and I only have one so I have to make a mold to make another set as I have two cars that need them. My question is what materials to use, how to flange this part for a mold, and can I use evercoat pva or do i need wax to release mold from part?
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Hanaldo
Hanaldo
Hanaldo
posted 8 Years Ago HOT
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4mm thick is pretty thick for composites! Legal requirement for fibreglass replacement panels is 3mm, so 4mm is absolutely fine. They must be pretty heavy for what they are! 

PVA would be my choice if you can spray it. If you can't spray it then go for wax, but make sure whatever surface coating that's on it is compatible with the tooling gelcoat that you choose to use. PVA will prevent any compatibility issues, wax won't. Test first! 

As for how to flange, have you watched EC's tutorial videos on making a bonnet? Just follow that process and adapt it for your needs. 
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bridgeport13b
bridgeport13b
bridgeport13b
posted 8 Years Ago HOT
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OK, i did order pva and i am picking up some relase wax pretty soon, what material oz would u use?
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over fender mold need help
bridgeport13b - 8 Years Ago
     So the part is 4mm thick, so its very thin, should I add in strips of wood and hot glue them in?
bridgeport13b - 8 Years Ago
     4mm thick is pretty thick for composites! Legal requirement for fibreglass replacement panels is...
Hanaldo - 8 Years Ago
             OK, i did order pva and i am picking up some relase wax pretty soon, what material oz would u use?
bridgeport13b - 8 Years Ago
     What do you want to make them out of? Carbon fibre, fibreglass, Kevlar? Do you have vacuum equipment...
Hanaldo - 8 Years Ago
     Hi the parts I am making are going to be fiberglass and I do not have a vacumme source
bridgeport13b - 8 Years Ago
     Ok. In that case I would go for 3 layers of 225g and 2 layers of 450g chopped strand. You could use...
Hanaldo - 8 Years Ago
     I'll be doing the same for my JZZ30 when i get skilled enough with vacuum infusion so im gonna have...
joellawtie - 8 Years Ago

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