sagonzal2000
Well-Known Member
- Joined
- Feb 23, 2019
- Threads
- 7
- Messages
- 132
- Reaction score
- 59
- Location
- New Mexico
- First Name
- Sal
- Vehicle(s)
- 2017 GT 350
Quick question , why do some shops want to blend into the fenders or 1/4 panels when painting bumpers? The bumpers are plastic and I don’t think there would be a true match with sheet metal . Thanks for your expertise!No flex agents involved with base coat / clear coat on bumper panels. No need if the surface is prepped correctly and you are using quality primer / base and clear coat.
Blends happen because paint ages. UV exposure, polishing, wear etc etc. Not to mention matching (even factory paint codes) depends on temp / humidity etc etc. This makes the newly painted part of the car a different shade than the rest of the car. Especially noticeable on colors with metallic in them.
I've personally painted more than a few rear / front plastic bumper covers and never used flex agents. Some painters use them - every painter I know at large volume collisions centers repairing newer cars do not 99% of the time. But to be clear the flex agents aren't normally in the base coat, they are usually added to the primer or the clear coat.
Urethane based base coats and clear coats rely on a physical AND chemical bond.
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