Is This A Paint Burn?

**Macko** · 07-09-2009, 11:21 AM

Guys

I`d be grateful if you could take a look at this & tell me if it`s a paint burn;

http://usera.imagecave.com/Macko1968/burn.JPG

Thanks

Mick

**GS4_Fiend** · 07-09-2009, 11:28 AM

I have those marks too. It`s from improper polishing. Update me on that too.

**Byk** · 07-09-2009, 11:36 AM

Yep, looks like polished base coat to me. I got one of these - applied over 6 coats of Klasse SG to make sure there is decent protection on top of it.

**imported_Dave1** · 07-09-2009, 03:39 PM

Hard to tell......

Looks a little like sanding marks to me.....

Give a little background on the picture if you can......

**Barry Theal** · 07-09-2009, 04:09 PM

That is a burn.

**Byk** · 07-09-2009, 04:14 PM

You basically went through the clear coat and exposed the base coat.

**imported_Jakerooni** · 07-09-2009, 06:07 PM

Originally Posted by Byk

You basically went through the clear coat and exposed the base coat.

Ding Ding Ding!!!!! We got a winner... Went right through the clear.. Not much you can do about it now... Have to respray it.

**Macko** · 07-09-2009, 10:11 PM

Cheers guys, that`s what I suspected. That was a 4 inch yellow edge pad with IP on a Cyclo in less than 1 minutes

.

I assume a reapray will require base & clear coat, not just the latter?

**Setec Astronomy** · 07-09-2009, 10:28 PM

Another overheated urethane bumper...that`s like the 3rd one this week.

**GoudyL** · 07-10-2009, 06:13 AM

Originally Posted by Setec Astronomy

Another overheated urethane bumper...that`s like the 3rd one this week.

Maybe we should create a sticky post about not polishing non-metalic panels, due to the risk of catastrophic paint failure?

**Setec Astronomy** · 07-10-2009, 06:36 AM

Originally Posted by GoudyL

Maybe we should create a sticky post about not polishing non-metalic panels, due to the risk of catastrophic paint failure?

Or one about being careful on plastic panels? Aren`t you being a little extreme? Don`t we all risk catastrophic paint failure everytime we touch a polisher to a car, even if it`s less risky on a metal panel? Do we know if someone has been there before and thinned the clear? You can buy a new car and still have had it polished somewhere along the line at the mfr., port, dealer. I bought a car that had been sitting on the lot and wouldn`t let them wash it. The whole car was in need of claying except for an 8" or so square on the rear deck...obviously something happened there that was polished out...perhaps that`s a metal panel paint failure waiting to happen after some kid with a rotary polished it to an inch of its life and I come along with my PC or Flex and burn through the rest of the way.

All newbs (and even experienced detailers) are at risk of catastrophic failure by using an inappropriate product or technique, or for the reason mentioned above, or a bad repaint, etc. Opting to not polish is kind of a knee-jerk over reaction; we should be emphasizing education and caution.

**Mr. Vapor** · 07-10-2009, 07:00 AM

whoa whoa whoa.......back the detail truck up.

JUST when i thought i had this whole thing figured out, now i can`t use my brand new PC on my plastic bumpers?!

I`d like to side with the education side rather than the knee-jerk reaction.

What is the proper course of attack for my bumpers?

**jfelbab** · 07-10-2009, 07:20 AM

Originally Posted by Mr. Vapor

whoa whoa whoa.......back the detail truck up.

JUST when i thought i had this whole thing figured out, now i can`t use my brand new PC on my plastic bumpers?!

I`d like to side with the education side rather than the knee-jerk reaction.

What is the proper course of attack for my bumpers?

Of course you can use your PC on your bumpers. You just need to use a less aggressive technique and/or pads and polishes. There are a couple things going on with bumpers. First they are covered with a relative thin plastic/vinyl shell that doesn`t have the same heat sink that metal does and second they are painted with a different paint. The bumper paint is quite a bit more flexible and able to resist chipping better than the paint on the rest of the car. This paint can`t take the heat so you need to modify your approach is all. I`ve used a DA for 13 years on all kinds of cars and their bumpers and have never had a single issue. I am just more cautious to using less pressure and not letting them heat up. Just use good judgement and caution and you will be fine.

**Mr. Vapor** · 07-10-2009, 07:25 AM

^^^ Makes complete sense. Thanks!

**Setec Astronomy** · 07-10-2009, 07:28 AM

And stop often and feel the surface you are polishing to see if it`s getting hot, that will give you an idea of the effect you are having and whether you are getting into a danger zone. As stated earlier in this thread or elsewhere...once you get it to a certain temp...the damage is almost instantaneous (no warning).