A warning on "paint wrinkle"!!!

[Garage Troll]

Re: A warning on "paint wrinkle"!!!

Thank you.


I still find myself using the rotary on heavily swirled bumpers, but I'm definitely more cautious now and I'm always checking to make sure the panels are not getting warm/hot.

Rasky

No problem!

I often wonder how much of this flex agent is in the paint on my polymer panels.

[Mary S]

Re: A warning on "paint wrinkle"!!!

Rasky, I really appreciate your posting this, because it could have easily happened to me in the upcoming days.

It kind of sounds like the most conservative thing to do with plastic bumpers if you are going to buff them is to use a rotary with a 4-inch pad; unlike the DA, which is more aggressive with a smaller pad, the rotary is less aggressive with a small pad, because the outermost part of the pad moves at fewer cm/second than with a larger pad at the same rotational speed. Still, caution is needed, because it sounds like the paint on the flexible bumpers doesn't adhere as well as to metal.

[RaskyR1]

Re: A warning on "paint wrinkle"!!!

Rasky, I really appreciate your posting this, because it could have easily happened to me in the upcoming days.

It kind of sounds like the most conservative thing to do with plastic bumpers if you are going to buff them is to use a rotary with a 4-inch pad; unlike the DA, which is more aggressive with a smaller pad, the rotary is less aggressive with a small pad, because the outermost part of the pad moves at fewer cm/second than with a larger pad at the same rotational speed. Still, caution is needed, because it sounds like the paint on the flexible bumpers doesn't adhere as well as to metal.

Small pads tend to work well on the shape of most bumper covers too. I think the most important thing is to reduce your speed, lighten up on the pressure a bit, and definitely don't stay on one area too long or make to slow of a pass. This will require more time to correct, but it's better than risking paint wrinkle.

[Show N Tell]

Re: A warning on "paint wrinkle"!!!

What do you recommend for plastic bumpers when using m105/205?

[Michael Stoops]

Re: A warning on "paint wrinkle"!!!

What do you recommend for plastic bumpers when using m105/205?

Treat them the same way you treat the rest of the car. Same pads, same tool, etc. Just make sure you don't apply undo pressure, that you don't dwell in one area too long, and you don't start generating a lot of heat in one spot. It's always a good idea to stop buffing and simply touch the paint with your bare hand as you go. If it feels a little warm you're fine, but if gets hot then back off and let it cool down. More importantly, be aware of what you were doing just before it got hot and back down from that process - time, pressure and speed. You do not want to get this substrate really hot because it dissipates heat differently than steel or aluminum, and that's part of why you can get into trouble here.