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Making a fiberglass rear bumper, I have questions.

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Making a fiberglass rear bumper, I have questions.

 
Old 01-31-2014, 09:39 PM
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My1991
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Default Making a fiberglass rear bumper, I have questions.

First off a few years ago I bought a 80-82 rear bumper mold from a guy. I want to see what quality it can produce in a fiberglass bumper. It seems to be nicely made.

Question are

gel coat process

certain resins that are compatible to 74-82 vettes

obviously I want to try hand laying fiberglass and if it comes out nice will look into chop gun to produce more

Or should I just sell the thing instead of wasting time?




Last edited by My1991; 01-31-2014 at 10:22 PM.
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Old 02-01-2014, 05:29 PM
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DUB
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Originally Posted by My1991 View Post
First off a few years ago I bought a 80-82 rear bumper mold from a guy. I want to see what quality it can produce in a fiberglass bumper. It seems to be nicely made.

Question are

gel coat process
Yes...Gelcoat will need to be sprayed and also hand brushed in. You want to make sure you have at least 20 mils.
certain resins that are compatible to 74-82 vettes
The resin is what you choose to use. Polyester is the normal resin used in making a part...and it should NOT be what you buy from a "Big Box store". You have to be careful in what you choose, how you activate it and having the rollers to make sure that you get all the air out. using a paint brush only in this situation would be a waste of time...and not worth it
obviously I want to try hand laying fiberglass and if it comes out nice will look into chop gun to produce more
I honestly think that they are hand laid and no chopper gun used. Having your patterns cut out of the fiberglass mat and knowing where to have a "cut" straight edge and a shredded (torn) edge make a difference in how the part will come out.
Or should I just sell the thing instead of wasting time?
It might pay off...but with all the materials, tools, etc...and not knowing if when you do pull a part...if it is good and not needing to be repaired and then another "master mold" made so the corrections/repairs can now be in the new part(s).

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Old 10-07-2014, 02:42 PM
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80-Vette
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I know this is an old thread but just curious how this turned out. Were y8ou successful at making the bumper?
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Old 10-07-2014, 05:44 PM
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I guess it was not done...I gave up on waiting for a reply myself.

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Old 10-08-2014, 07:25 PM
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That's too bad. I would have given it a go. What do you have to lose other than a few $$ and time.
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Old 04-29-2019, 09:40 PM
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derekd8915
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Would you be interested in selling it?
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