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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Dec 2002 Posts: 86 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2002 Posts: 86 | Can i prime fiberglass fenders with epoxy primer ?
47.5 Loadmaster 5 window
48 Chevy 3600
69 GTO convertible
| | | | | Joined: Mar 2002 Posts: 990 Member | | Member Joined: Mar 2002 Posts: 990 | Yup. Are you using just rattle can or a 2 part mix up primer in a gun? It also depends on what kind of top coat you are going to put on. Some people sez all primers compatible with all paint, but, in my experience, taint the case. I have had problems with paint lifting on rattle can primer.
If you are using rattle can - I like the DuplColor products as they have a fan spray head and you can almost lay the paint on as good as a gun. | | | | | Joined: Dec 2002 Posts: 86 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2002 Posts: 86 | thanks for the info. I am using dupont colar. Have not decided on paint yet.
47.5 Loadmaster 5 window
48 Chevy 3600
69 GTO convertible
| | | | | | Anonymous Unregistered | | Anonymous Unregistered | You will never get paint to stick to fiberglass be it primer ,sealer or top coat unless you use a flex agent catalyst.
Just tell the paint shop you are painting a jet ski to get the correct chemicals. | | | | | Joined: Jun 2001 Posts: 793 Bondo Artiste | | Bondo Artiste Joined: Jun 2001 Posts: 793 | Flex agent does not promote nor hinder adhesion. For the longest time in our shop we used a flexing agent, but have sinced stopped and no adhesion issues have come up. We spray only Dupont products.
That is just my experience.......
~ Phillip
1949 GMC Suburban - 10 year project
1952 Pontiac Chieftain Convertible straight 8 hydramatic
1945 GMC half ton truck - Driver- Sold 9-15-25
1946 Chevy COE - SOLD 1-5-26 BUH BYE CHEVY!
1959 GMC Half ton long bed NAPCO
| | | | | | Anonymous Unregistered | | Anonymous Unregistered | After painting many many fiberglass boats & jet skis, we have had the best luck with using paints with a flex agent. Fiberglass expands & contracts way more than steel. If you put a hard catalyzed paint [ without a flex agent ] on a material that expands & contracts like fiberglass does you will get lifting & cracks.
Epoxy paint has a unique property of being more brittle than lacquer or enamel
The same applies for paint on AD steering wheels.
We like to use the " House of colors " line of paints. | | |
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