making a fiberglass replica of a metal hood. - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-28-2005, 01:36 AM
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making a fiberglass replica of a metal hood.

Ok, this is way out there, as i'm not sure of cost or what all might be involved but here it goes anyway.

I am currently working on a metal coweled hood, cut a 2' section out of another hood and had it welded it to my existing hood. Ran into a ton of problems so far, the hoods have a rib running down the center so they don't like to be bent into the shape of a cowl...So there is alot of low spots where it was bent where it shouldn't have, also the friend that did the welding i think went at it a little hot and warped some of it, so there is not alot of kitty hair to even out everything so it looks allright, and at the moment it looks pretty good, but i don't imagine it will stay that way for long. The metal itself is fairly flimsy in spots, and moves more than anything i have put fiberglass filler on before...so i don't think it will probably stay for a long long time. I was thinking i could use fiberglass mat over the entire cowl to add some strength to it, but not too sure about that either.

So here is the question, once the hood is how i want it to look, how difficult would it be to make a mold and then make a replicated hood intirely out of fiberglass from that mold? How much approx would it cost to do so?

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Old 06-28-2005, 05:10 AM
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Fiberglass hood

What you contemplate is very do-able..now as far as cost..dunno..

Once you have the existing hood shaped to your satisfaction..making sure you have gotten rid of any defects as they will show up in the final product then we take a mold off of the existing..

Wax the existing with mold release wax and then spray the hood with tooling gel coat...then do a layup of several layers of glass..once the glass has been laid up then make several wood ribs to glass to the hood mold to help keep the mold stiff and from shifting or warping..these ribs can be rein-forced with metal if you are desiring to make a production mold..

Once the mold has been made then you can make the finished part..and you can layup the finished part in the weight that you like..real thin for a race part....somewhat heavier for a street show part...

there have been a number of posts on fiberglass so do a search for suppliers of materials and such..

Why go to all this trouble..If you make a nice part that fits a car of common interest then you may sell some of these hoods and recoup some of your expenses...

OMT
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