How much paint am I removing?

manueljlg · Aug 21st, 2004, 07:43 PM

How much paint am I removing?

If I could measure my clear coat thickness with a digital gauge before and after using DACP with a PC on a 8006 pad at speed 5, which would be the outcome ? How much clear coat would be removed?

Setec Astronomy · Aug 21st, 2004, 08:10 PM

Funny, I just did this, sort of...much more agressively than you...might have taken off about half a mil...based on my rough calibration of the eddy current tester I borrowed. I would say one application with your pad would be a tenth of a mil or less...but I'm just guessing...Mike Phillips is prolly the guy who has done this a lot, or Rod Kraft who showed us his tester today at the detailing day.

manueljlg · Aug 21st, 2004, 08:14 PM

Also, what´s the standar thickness of clear coat in most cars?

Setec Astronomy · Aug 21st, 2004, 08:18 PM

According to Rod Kraft today, if I remember this correctly, the total film build is usually 4.5 to 5.5 mils, with the clear 2.0-2.5 mils. You are only "allowed" to remove 0.5 mils of the clear. So...I don't think you even would remove 0.1 mils, but that's just my guess.

Jimmy Buffit · Aug 22nd, 2004, 03:18 AM

Quote:

You are only "allowed" to remove 0.5 mils of the clear

And many paint mfgs say do not remove more than .3 mil .

The thinking is that if you remove any more, the UV protection is compromised, and may lead to clearcoat failure in 6 months or so.

Me? I dunno. But I just received my ETG (Electronic Thickness Guage) last week. It makes me much more aware when going after those DEEP imperfections.

Jim

manueljlg · Aug 22nd, 2004, 07:02 PM

How many times can I use my PC with DACP on my truck ( I plan to keep her a long time ) before removing more than 0.3 mil. ?

Jimmy Buffit · Aug 23rd, 2004, 07:38 PM

This is just my opinion. Once, maybe twice...

ValuGard offers a product (which I THINK is similar to DACP) and their directions clearly state that one pass (buff to dust) will remove .3 mil.

Without the (expensive) ability to measure, we are buffing in the dark! That' why I'm so bothered by folks who think wetsanding is a casual fix for so many problems...

Be careful.

Jim

Setec Astronomy · Aug 23rd, 2004, 07:55 PM

Quote:

Originally posted by Jimmy Buffit
This is just my opinion. Once, maybe twice...

ValuGard offers a product (which I THINK is similar to DACP) and their directions clearly state that one pass (buff to dust) will remove .3 mil.

Without the (expensive) ability to measure, we are buffing in the dark! That' why I'm so bothered by folks who think wetsanding is a casual fix for so many problems...

Be careful.

Jim

How much have you used that ETG? After seeing Rod Kraft use his the other day (at the Piscataway Detail Day), I borrowed an eddy current tester to see what I did with DACP and scared myself! Until I measured another part of the car where I hadn't used the DACP...so now I think the thin spot where I buffed might be original variation...or weathering. How can YOU tell when presented with a car that you don't know the history of? If it was single stage paint, it would be eaiser, but how confident can you be how much clear is left, when you see all different makes and years? Just asking, not challenging.

manueljlg · Aug 23rd, 2004, 09:56 PM

Mike P. or 2hotford:
Can you please post some comments about this topic ?

Mike Pennington · Aug 24th, 2004, 07:46 AM

Let me jump in here also...

DACP and a PC will not remove .3 mil with one pass not even close...

Just to give you an idea, we can take our Finishing Papers, wool pad, and Diamond Cut 2.0 and remove less than .5 mil.

With that said, you can use DACP over and over and over with a PC with no problems of removing too much material and causing any type of paint failure.

I hope this clears things up

Mike

Aug 21st, 2004, 07:43 PM	#1
manueljlg Registered Member Join Date: Mar 2004 Posts: 117 Rep Power: 7	How much paint am I removing? How much paint am I removing? If I could measure my clear coat thickness with a digital gauge before and after using DACP with a PC on a 8006 pad at speed 5, which would be the outcome ? How much clear coat would be removed?

Aug 21st, 2004, 08:10 PM	#2
Setec Astronomy On Vacation Join Date: Jul 2004 Location: New Jersey Posts: 554 Rep Power: 11	Funny, I just did this, sort of...much more agressively than you...might have taken off about half a mil...based on my rough calibration of the eddy current tester I borrowed. I would say one application with your pad would be a tenth of a mil or less...but I'm just guessing...Mike Phillips is prolly the guy who has done this a lot, or Rod Kraft who showed us his tester today at the detailing day. __________________ Mike

Aug 21st, 2004, 08:18 PM	#4
Setec Astronomy On Vacation Join Date: Jul 2004 Location: New Jersey Posts: 554 Rep Power: 11	According to Rod Kraft today, if I remember this correctly, the total film build is usually 4.5 to 5.5 mils, with the clear 2.0-2.5 mils. You are only "allowed" to remove 0.5 mils of the clear. So...I don't think you even would remove 0.1 mils, but that's just my guess. __________________ Mike

Aug 23rd, 2004, 07:38 PM	#7
Jimmy Buffit Professional Detailer Join Date: Jan 2004 Location: Indianapolis, IN (Carmel) Posts: 267 Rep Power: 9	This is just my opinion. Once, maybe twice... ValuGard offers a product (which I THINK is similar to DACP) and their directions clearly state that one pass (buff to dust) will remove .3 mil. Without the (expensive) ability to measure, we are buffing in the dark! That' why I'm so bothered by folks who think wetsanding is a casual fix for so many problems... Be careful. Jim __________________ If it was easy, everybody'd be doing it! Proud Member of NAPDR www.jimmybuffit.com

Aug 23rd, 2004, 09:56 PM	#9
manueljlg Registered Member Join Date: Mar 2004 Posts: 117 Rep Power: 7	Mike P. or 2hotford: Can you please post some comments about this topic ? Last edited by manueljlg; Aug 23rd, 2004 at 09:59 PM..

Aug 21st, 2004, 08:14 PM	#3
manueljlg Registered Member Join Date: Mar 2004 Posts: 117 Rep Power: 7	Also, what´s the standar thickness of clear coat in most cars?

Aug 22nd, 2004, 07:02 PM	#6
manueljlg Registered Member Join Date: Mar 2004 Posts: 117 Rep Power: 7	How many times can I use my PC with DACP on my truck ( I plan to keep her a long time ) before removing more than 0.3 mil. ?

Aug 24th, 2004, 07:46 AM	#10
Mike Pennington Director of Training Join Date: Jan 2004 Posts: 1,493 Rep Power: 23	Let me jump in here also... DACP and a PC will not remove .3 mil with one pass not even close... Just to give you an idea, we can take our Finishing Papers, wool pad, and Diamond Cut 2.0 and remove less than .5 mil. With that said, you can use DACP over and over and over with a PC with no problems of removing too much material and causing any type of paint failure. I hope this clears things up Mike __________________ Mike Pennington Director of Training and Consumer Relations Meguiar's, Inc. mpennington@meguiars.com

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