Before you think about wet sanding....

garbageman918

New member
I'm a lurker through and through. I like tinkering, toying, and the like similar to many others here and it seems the second most asked question on how to do something (1st being polishing related) is wet sanding.



There's warnings everywhere from the pros but just like myself, I'm sure there are others out there that are just as curious about wanting to do it themselves. Out of many of the articles on here, I randomly came across an article that was highly informative from a semi-scientific 'numerical' approach.



Here's an excerpt

To illustrate how thick (or actually thin) a paint surface is, consider a cigarette wrapper - the cellophane wrapper that encloses the entire package...One layer of the wrapper will generally measure about 24 to 27 microns. Two layers combined will generally measure about 50 microns. This is the entire thickness of the clear coat on most of today's vehicles



The article is here Kleen Car | professional auto detailing training | auto detailing steamers, business opportunity - Articles, detailing articles, car detailing tips, how to detail a car - The Auto Laundry News - Electronic Paint-Thickness Gauges



What can I say...I'm a numbers guy and these numbers really helped me understand how scary thin factory clearcoat can be. I was messing with my macro lens on my friend's truck who has paint peeling showing how razor thin the primer/paint/clear combo is....will try to upload a picture



Hope it's useful for someone before they sand.
 
garbageman918- Welcome to Autopia!



That cellophane wrapper analogy is good, maybe people will be able to get their heads around that.



I will say that *some* factory clears are a lot thicker than that (I've taken off more than that by a long shot, not that it was something I'd recommend to others), but people really do need to be careful about doing this sort of thing.
 
Accumulator said:
garbageman918- Welcome to Autopia!



That cellophane wrapper analogy is good, maybe people will be able to get their heads around that.



I will say that *some* factory clears are a lot thicker than that (I've taken off more than that by a long shot, not that it was something I'd recommend to others), but people really do need to be careful about doing this sort of thing.



I agree totally with Accumulator. I recently did a Lexus where readings were around 285 microns, which I thought were very healthy, and thankfully because it needed alot of wetsanding due to the clients children scraping it with their bicycles, gym bags (even on the hood), etc.
 
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