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Door "Ding" Anyone?

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Old Oct 21, 2022 | 10:01 AM
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Default Door "Ding" Anyone?

The only other mention of this issue is a dead thread here: https://www.corvetteforum.com/forums...door-ding.html .

I only have it on driver side. There is no evidence that it came from an impact. It is underneath PPF although it was there when I picked it up from PPF install. PPF installer called his Vette Guy and he did not have an explanation on even how this could happen due to the composite makeup etc. none of us thinks a body shop is going to be able to do anything "good" about it. It could have been there when I picked up the car but really cannot confirm and it is so stealth it is really hard to see and to photograph but, of course, you can't unsee it once you do.

Really challenging to capture in an image since the car is so reflective but it turns out that a tree behind me provides the best image of the divot.

Anyone else have this sort of a door "ding" on their C8?






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Oct 21, 2022, 11:05 AM
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Originally Posted by loliveira
Find PDR guy. Most body shops will probably use a PDR guy anyway. Shouldn't be more than a few minutes and less than $100 for a good PDR guy.
The OP is asking about a Corvette, not a steel bodied autombile.
Old Oct 21, 2022 | 10:06 AM
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I have the exact same mark on my 2022 HTC. Mine is in the same location, except on the passenger side. I noticed it a few days after taking delivery of the car. I decided that since it is nearly invisible, and my car is a tint-coat color (very hard to match), it would probably cause more harm than good to demand the door be repainted. Since then, I don't even see the spot when I causally look at the car. I have to inspect the paint VERY closely to see anything wrong. In short, I live with it and just enjoy my car.
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Old Oct 21, 2022 | 10:08 AM
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Find PDR guy. Most body shops will probably use a PDR guy anyway. Shouldn't be more than a few minutes and less than $100 for a good PDR guy.
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Old Oct 21, 2022 | 10:09 AM
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SMC doesn't usually get those sorts of dings; my first guess would be that it came from BGA that way. Find a good dealer and have them take a look at it as long as it is still under warranty.

https://www.uti.edu/blog/collision/s...lding-compound
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Old Oct 21, 2022 | 10:11 AM
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Originally Posted by LIE2ME
I have the exact same mark on my 2022 HTC. Mine is in the same location, except on the passenger side. I noticed it a few days after taking delivery of the car. I decided that since it is nearly invisible, and my car is a tint-coat color (very hard to match), it would probably cause more harm than good to demand the door be repainted. Since then, I don't even see the spot when I causally look at the car. I have to inspect the paint VERY closely to see anything wrong. In short, I live with it and just enjoy my car.
Thanks. I feel the same but had no idea if anyone else has it.
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Old Oct 21, 2022 | 10:21 AM
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Originally Posted by BigVette427
SMC doesn't usually get those sorts of dings; my first guess would be that it came from BGA that way. Find a good dealer and have them take a look at it as long as it is still under warranty.
I haven’t seen a door ding problem on the newer generations of Vettes.
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Old Oct 21, 2022 | 10:25 AM
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...actually in my experience, it looks more like a spot in the paint than a "ding". It is almost as if some impurity settled on the paint during the curing process. Again, in my case I just ignored it, as on my car it is virtually invisible...
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Old Oct 21, 2022 | 10:28 AM
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Originally Posted by BigVette427
SMC doesn't usually get those sorts of dings; my first guess would be that it came from BGA that way. Find a good dealer and have them take a look at it as long as it is still under warranty.

https://www.uti.edu/blog/collision/s...lding-compound
Learn something new everyday! Thanks for the insight!
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Old Oct 21, 2022 | 10:48 AM
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If you look hard enough, you'll find those dimples all over. I'm pretty sure its just a side effect of bonding the inner and outer panels. I have one particularly noticeable dimple near where the rear quarter panel and rear fascia meet. If I reach my hand up behind the wheel liner and feel around, there is a small rough circle exactly where the dimple would be on the outside. It reminds me of ejector pin points or something on an injection molded part.
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Old Oct 21, 2022 | 11:05 AM
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Originally Posted by loliveira
Find PDR guy. Most body shops will probably use a PDR guy anyway. Shouldn't be more than a few minutes and less than $100 for a good PDR guy.
The OP is asking about a Corvette, not a steel bodied autombile.
Old Oct 21, 2022 | 01:19 PM
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Possibly a factory paint defect. I worked paint quality control at a GM/Toyota plant. Cratering can occur when air of a different chemical composition (such as a perfume or deodorant fragrance diffusing off an assembly line worker) gets trapped in the paint before it cures then bubbles/craters when the trapped air escapes. Paint line workers are told to minimize or not wear fragrant products. Cultural observation: Japanese more or less follow that rule to a T for the greater good of the company. Americans with lax attitudes more concerned about their paychecks than their employer's reputation for quality, not so much.
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Old Oct 21, 2022 | 01:24 PM
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Originally Posted by switchlanez
Possibly a factory paint defect. I worked paint quality control at a GM/Toyota plant. Cratering can occur when air of a different chemical composition (such as a perfume or deodorant fragrance diffusing off an assembly line worker) gets trapped in the paint before it cures then bubbles/craters when the trapped air escapes. Paint line workers are told to minimize or not wear fragrant products. Cultural observation: Japanese more or less follow that rule to a T for the greater good of the company. Americans with lax attitudes more concerned about their paychecks than their employer's reputation for quality, not so much.
I believe that based on the OPs photographs and the appearance of the same defect in my paint, this explanation best addresses what happened here...
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Old Oct 22, 2022 | 09:39 AM
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Thanks everyone. There is definitely a depression there. Dealer is my next step.
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Old Oct 22, 2022 | 10:13 AM
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Looks like it could be caused by the delivery driver when he has to climb through the window of the car to load and unload on the carrier.
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Old Oct 22, 2022 | 11:57 AM
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Those types of defects are in the SMC panel, not paint, and they are inherent in manufacturing that material. It's often missed in QC inspections because they are hard to see. Metal panels stamp out the same way every time. It's the price paid to keep the car as light as possible.

We have a small dimple in the passenger side nacelle on our HTC, which can only be seen from one particular angle under very bright shop lights. It can't be seen during normal daylight or more muted light. I spotted it months after delivery when we parked in a different garage bay, and I could see it every time we parked it in that spot. It's now parked in a different spot, and I haven't seen it since.
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Old Oct 23, 2022 | 12:04 AM
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Have noticed several “spots” on my 2021 Shadow Grey. Hood, roof and rear engine cover/hood/trunk (what ever it’s called). Spots I’m referring to are not dents, more like super fine scuff spots. When walking out into the garage I’m on an elevated deck with approx 5 steps down to the garage floor, from the deck can see several of the spots. Standing down at the car it’s best to impossible to see them unless the angle and lighting are perfect. I believe what I’m seeing are spots in the clear coat that are the result of very minor rubbing from the factory shipping cover. Was thinking of trying to use fine buffing compound, found it was so hard to find/see the spots when NOT on the elevated deck put the compound back on the shelf. Don’t know if your issue is similar or not.
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Old Oct 23, 2022 | 09:31 PM
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Originally Posted by cookoff
Have noticed several “spots” on my 2021 Shadow Grey. Hood, roof and rear engine cover/hood/trunk (what ever it’s called). Spots I’m referring to are not dents, more like super fine scuff spots. When walking out into the garage I’m on an elevated deck with approx 5 steps down to the garage floor, from the deck can see several of the spots. Standing down at the car it’s best to impossible to see them unless the angle and lighting are perfect. I believe what I’m seeing are spots in the clear coat that are the result of very minor rubbing from the factory shipping cover. Was thinking of trying to use fine buffing compound, found it was so hard to find/see the spots when NOT on the elevated deck put the compound back on the shelf. Don’t know if your issue is similar or not.
I really like Maguier's ScratchX for those fine scratches and swirls. Just a pea sized bit on a polishing pad and hand polishing for a few seconds or so is usually all it takes. I would use it sparingly though as if you use it too much, it will eventually eat through the clear and paint. I used it myself just after delivery for a few fine scratches and one of those suction cup looking circles that others have also seen.
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Old Sep 13, 2024 | 12:02 AM
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To the OP, what did you end up doing about this?
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Old Sep 13, 2024 | 10:00 AM
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Essentially living with it. Took it back to guys who did PPF and their assessment was what others said earlier in this thread that this was a molding thing, could not really be fixed. They also spoke to their own Corvette guys who said the same.

I think almost nobody sees it except for me but I'll be sure to inspect my next car more carefully.
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