Burning Paint with PC 7424

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calhoun1

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Is it possible to burn the paint with it?



I was just using it on my black car, and unfortunately it was in the sun.



I was using a blue pad with PO 85RD. I managed to get a quarter size wrinkle/hole in the paint. Is this possible with just the PC, or could a defect in the paint be an issue?



Also as you can see in the pictures this goes all the way down to the primer/plastic. So I am extremely upset at myself. Thinking about going to the dealer and saying I was just washing the car and this happened and having them fix it...



This is a brand new car, had it less than a full week, if that will help...



Pictures:

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Hmmm, that looks like some sort of paint flaw? Possibly a re-paint in that area and/or poor surface prep prior to being painted?
 
It LOOKS like the paint system failed to properly adhere to the plastic. Look at the wrinkles in it next to the "tear". It LOOKS like the paint "tore" off. Does not look like a burn through, especially with 85RD on blue.
 
Polishing in the sun on plastic bumpers didn't help the situation. Check carefully to see if it was resprayed. You might have a case with the dealer if it was resprayed. If not, no way will washing do that kind of damage.
 
calhoun1 said:
Is it possible to burn the paint with it?
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Yes!!!



I was using a blue pad with PO 85RD. I managed to get a quarter size wrinkle/hole in the paint. Is this possible with just the PC, or could a defect in the paint be an issue?
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Was that defect there before you started machine polishing the paint? :think:



Also as you can see in the pictures this goes all the way down to the primer/plastic. So I am extremely upset at myself.
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Why? You did something stupid, and got a plausible result.



Do not machine polish plastic/fiber glass panels. The machine will be putting alot of energy into a very small area, and non-metalic panels do not conduct heat.



In addition the paint on the non-metalic panels is much softer because it contains more "flex agents" which make the paint more resistant to rock chips etc. That's why it wrinkled off, rather than burned through, and of course it's not helpful that you did this with very young paint.



Thinking about going to the dealer and saying I was just washing the car and this happened and having them fix it.
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That is extremely mature. You damage the car, and then lie to the dealer about how it happened. :hifive:



This is a brand new car, had it less than a full week, if that will help...
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Why are you machine polishing a brand new car? :confused: The paint doesn't reach it's full hardness for about 90 days after the build date.



Car Care != Machine Polishing.
 
It's definitely a burn, or more accurately a "melt." The sun heating up the black bumper didn't help any, either. As you now know, the plastic parts of a car are much easier to damage when polishing. They just won't take heat like metal. Make sure you always keep the pad moving across the paint... I'm guessing that you held the polisher stationery for a few seconds with some pressure on it.



What really sucks is there isn't any warning when this is about to happen. You go from happy to sad immediately. Hence the need to be really careful.



Man, I'm sorry about your new car, but I can't get behind the idea of trying to make the dealer pay for something you did.
 
i did the same thing man... with a rotary, and 6 inch pads. so i mean i was a lot more aggressive then you but still the point holds, the poly bumpers just wont take the heat and now i know that first hand. i'm thankful that it was only my car and not a clients. but i made myself feel better about it because a few weeks before it happened some a$$ hole sideswiped my rear bumper when backing out of a parking space so it needs a repaint anyway. its OK man, don't beat yourself up. this isn't uncommon for people just entering the game. good luck mate!
 
You are not alone. I had a similar mishap (Not due to the pc or pad!) with my new babe, and I am having it repaired on Monday. Its a shocking thing, but I was able to stay calm and realize that its an object and not a person or flesh, and it can be repaired. What will most likely happen, the body shop will need to do a color sand repair, and (if the damage is localized) do a re-clear of the bumper (?) or area affected.



But yes, given the right circumstances a pc can burn thru paint!
 
You can burn paint with anything, but to do that much damage with a pc and a blue pad and 85, either you must have been doing something really wrong, like sitting ontop of it in 1 spot for a minute or so, or there was a problem from the factory.



If I had to take a guess, and it's just my guess, I'd say a problem from the factory - on one of my test bumpers something similar happened.



I did 1 pass with a cyclo, orange pad, and menzerna power gloss, next to no pressure, yet somehow I totally removed the clear, the paint, and went right down into the primer.



pan5.jpg


pan4.jpg


pan3.jpg




At first I thought this was how strong power gloss was, but this made no sense, so I went about 10'' over on the panel and, with maximum force, pressed the cyclo down and left it riding in 1 spot for a good 40 or 50seconds. removed it and no paint burn or any type of damage. So if I could apply 100x (okay, that's my estimation, lol) the force and heat 10'' away, it certainly wasn't the cyclo's fault, my fault, or anybody but the factory's fault.







GoudyL said:
Do not machine polish plastic/fiber glass panels. The machine will be putting alot of energy into a very small area, and non-metalic panels do not conduct heat.
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Look at all the corvettes and cobra kit cars that melt when you machine polish them :har:
 
GoudyL said:
Why are you machine polishing a brand new car? :confused: The paint doesn't reach it's full hardness for about 90 days after the build date.
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Most car manufacturers will spot wetsand and polish cars right out of the oven.



The problem wasn't that the paint was polished too soon but incorrectly.
 
Post #14 is right; My signature car's body panels are 75% composite, and I have polished them in the sunlight (not direct, however) a few times w/o issue.



Off the bat I would either suspect a defect in factory paint (it does happen!), a pad that could've went awry, a mishap, or a number of mysterious things if the OP is claiming that he/she did not do anything intentionally wrong.
 
Scottwax said:
The problem wasn't that the paint was polished too soon but incorrectly.
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Is there something though from the pictures that makes you certain it was polished incorrectly and not a problem from the factory?



For example, if you look a post or two above yours (my last one), you can see what, on a previously-never-before-polished surface, a cyclo did in 1 pass (maybe 10seconds of work) - chewed through the clearcoat, the paint, and right into the primer. Bet you've never seen that before when you used one, heh.
 
efnfast...aren't you the other guy that did this, on a rocker panel? Are you saying that was a factory defect? On the one hand, there's no two ways about it, plastic panels conduct less heat. On the other hand, I'm sure there is some variation in paint adhesion, and if you happen to be on one of those spots, you know...wrong place wrong time. Plus, they DO repair things at the factory when they don't come out right, so it's possible in both of these instances it was the combo of a not-quite-to-par spot that got heated up.



The Corvette example is a little different because the glass fiber in fiberglass/SMC makes the panels more thermally conductive than the polyurethane/etc. bumper covers.
 
I'm going to agree with SB here. At best, I would say you have an insurance claim. This is just another unfortunate example that one can in fact induce damage with machines aside from just the rotary.



Good Luck and let us know how it turns out.



Andy
SuperBee364 said:
It's definitely a burn, or more accurately a "melt." The sun heating up the black bumper didn't help any, either. As you now know, the plastic parts of a car are much easier to damage when polishing. They just won't take heat like metal. Make sure you always keep the pad moving across the paint... I'm guessing that you held the polisher stationery for a few seconds with some pressure on it.



What really sucks is there isn't any warning when this is about to happen. You go from happy to sad immediately. Hence the need to be really careful.



Man, I'm sorry about your new car, but I can't get behind the idea of trying to make the dealer pay for something you did.
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efnfast said:
Is there something though from the pictures that makes you certain it was polished incorrectly and not a problem from the factory?



For example, if you look a post or two above yours (my last one), you can see what, on a previously-never-before-polished surface, a cyclo did in 1 pass (maybe 10seconds of work) - chewed through the clearcoat, the paint, and right into the primer. Bet you've never seen that before when you used one, heh.
Click to expand...



Yeah, there is. You can tell that it is *melted*. Melting through a panel with a machine polisher just isn't a factory defect.



In your picture of your damage, it doesn't look like a melt at all. Two *different* types of damage, caused by two different things.
 
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