light marring from microfibre when doing isoprep wipedown

J

jevan

New member
Hi,



Has anyone experienced any light marring/scratching from doing an isoperpanol widedown (50/50 distilled water)



What happens is i start with Menzerna FG 500 on an organge or yellow or surbuff mircrofibre pad depending on how bad my paint is (Its a Black BMW 323I 2007 that has never been detailed before that is a daily driver so u can imagine the Crap/scrathes on there), then onto PF2500 on a White ccs then SF4000 on black.



When I am happy with my work and see no major sratches I spray with ISO and use a microfibre town to wipe then flip the MF and buff with the other side till the paint stops flashing, then i will use my led torch to inspect the paintwork(I used this, lights from my ceiling and halogen floodlights to inspect the work after each polishing stage). But what i notice is tiny, tiny scratches from what i believe is from my MF wipedown stage, am i wrong? unless i didnt get rid of the sratches but i believe i have....



Anyway, the MF was new and from CG, n then i saw sratches i repolished with 4000 on black pad n then they were gone again, and used another MF towel for the ISO wipedown and there were no sratches. I am seriously wiping ever sooooo lightlyyy... I think something is not right. I have gone through 6 MF towles now all of them new all of them from different suppliers (CG, Waxit, ZAS, CCP).



I have read a little bit about paints being soft when it comes to the wipedown stage. (i cant remember where but it was an audi)



I rang CCP and they told me just wash the car when im dont with APC. If i have mint apc, Dawn and CG citrus wash n gloss and i mix them all together in my foam lance will this me enough to stipp everything when im done?



I want to get the paint as best i can before doing opticoat 2.0.



Thanks for your help guys.
 
Isopropyl alcohol (IPA) and /or distilled water have no inherent lubricity. While it’s true the towel is aquaplaning on the distilled water / IPA solution , as it evaporates this cushion, if you will, diminish and you are just wiping the paint surface with a microfiber towels.



This type of surface marring is prevalent with ‘soft’ paint. You could try adding 10% P21s Total Auto Wash or ONR to the IPA solution to provide surface lubrication

 
Rather than an IPA solution, I use Meguiar's M34 Final Inspection to help get the polish residue off safely.



If I'm gonna strip the polishing oils, I'll do that *after* using the M34 (and I generally prefer PrepWash over IPA).



jevan- Help me get this straight- first your wipe-off *did* result in micromarring, but then a subsequent wipe-off did *not*, right? What did you do differently the second time? Different MFs, different technique, etc.
 
first time i thought brand new MF towel the most expensive one i had it should be fine but then when i got the marring i thought it was strange. so i repolished did another ISO widedown. but this time i was wiping stupidly lightly to the point it just seemed silly and took a loong time for a small area of wipedown =_=.



Accumulator said:
Rather than an IPA solution, I use Meguiar's M34 Final Inspection to help get the polish residue off safely.



If I'm gonna strip the polishing oils, I'll do that *after* using the M34 (and I generally prefer PrepWash over IPA).



jevan- Help me get this straight- first your wipe-off *did* result in micromarring, but then a subsequent wipe-off did *not*, right? What did you do differently the second time? Different MFs, different technique, etc.
Click to expand...
 
jevan said:
its sapphire black.
Click to expand...



My BMW IS Sapphire Black also. If polish is extra hard to get off you can inflict towel marks. I use Rustoleum Wax and Grease Remover. It has a lot of lubrication to it. I also use Eraser after.
 
Hi Swanicyouth, did u find that the paint is rather easy to marr? i thought it should be a bit hard due to ceramic clear but i dnt knw why mine is so easily marred.



maybe i polished all of the ceramic clear off becasue i have herd that the the cermaic particles in the clear rise to the surface upon curring?



Im not sure
 
jevan said:
Hi Swanicyouth, did u find that the paint is rather easy to marr? i thought it should be a bit hard due to ceramic clear but i dnt knw why mine is so easily marred
Click to expand...



So how can a dense (hard) clear coat be so easily scratched?



It’s a matter of physics, not material density (material hardness). Force acts through a body that has a surface area; if the surface area is really small while maintaining an equal force, the pressure becomes astronomical and the object under pressure capable of penetrating the surface of an otherwise tough material. (Newton's third law of motion) That’s why a micro fine thread that is twice as fine as silk and a 100 times finer than a human hair, in an otherwise soft towel will scratch your paint. And the same reason a mosquito can penetrate a rhino hide with its proboscis (stinger).

If you press down on your paint finish with your palm it feels really hard and tough, but that’s because the surface area of your palm is relatively large and what you’re actually feeling is the resistance of the steel underneath the paint. Try pressing your thumb nail into the paint with the same amount of force you used with your palm, if you dare.





jevan said:
maybe i polished all of the ceramic clear off becasue i have herd that the the cermaic particles in the clear rise to the surface upon curring?



Im not sure
Click to expand...



DuPont's SupraShieldâ„¢, PPG's Optechâ„¢ and CeramiClearâ„¢ Clear Coat are all binary clear coat compositions using ceramic particles designed to offer long-term scratch resistance, gloss and durability and is applied as a final coating over a traditional clear coat, CeramiClearâ„¢ has an approximate thickness of 7.5 µ (0.5 Mil) this top layer also contains the paint systems UV protection
 
jevan said:
first time i thought brand new MF towel the most expensive one i had it should be fine but then when i got the marring i thought it was strange. so i repolished did another ISO widedown. but this time i was wiping stupidly lightly to the point it just seemed silly and took a loong time for a small area of wipedown =_=.
Click to expand...



Guess you've learned just how challenging this stuff can be...see, it wasn't really silly after all. Heh heh, that's the way I do my washes.



But I'd really quit doing straight-IPS wipedowns like that. Use something with some lubricity first if you're gonna do such stuff to get off all the abrasive residue (even light stuff you might not see).
 
You must log in or register to reply here.
Back
Top