Making a fiberglass rear bumper, I have questions.
01-31-2014, 09:39 PM
#1
Racer
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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?
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.
02-01-2014, 05:29 PM
#2
Race Director
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?
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?
DUB
10-07-2014, 02:42 PM
#3
Racer
I know this is an old thread but just curious how this turned out. Were y8ou successful at making the bumper?
10-07-2014, 05:44 PM
#4
Race Director
I guess it was not done...I gave up on waiting for a reply myself.
DUB
DUB
10-08-2014, 07:25 PM
#5
Racer
That's too bad. I would have given it a go. What do you have to lose other than a few $$ and time.
06-09-2019, 07:56 AM
#7
Race Director
the OP was last on here in 2014. send him a PM. he will get an email notification he got a PM. best chance of contacting him. YOUR best bet is to buy a bumper somebody with more practice already made...