Question regarding buff off polish

**glen e** · 02-04-2014, 11:13 PM

So let`s say I`m laying down 105 with an orbital. It`s done and has hazed up.

Can I just then lay down a coat of 205 with another pad or do I have to buff off the 105 first?

I realize convention says to buff off the 105 first, but why? Is mixing them degrading the effect that 205 will give you?

Thanks!

**Nth Degree** · 02-05-2014, 02:08 AM

If you have a collection of basketballs in sand and use a piece of plywood to move them around then dump a bunch of tennis balls into the mix and try to move those around with the plywood before removing the basketballs, how effective will you be?

The abrasives from the 105 are significantly larger so you will not be getting the results from the 205 abrasives.

**Stokdgs** · 02-05-2014, 02:44 AM

Glen-
Yes, please remove the Meguiars 105 if you are ready to go to Meguiars 205..

I have heard some people leave the old compound on when using the same compound, but since I use Rotary Power, I work the product until it all goes away...

Good luck with this !
Dan F

**glen e** · 02-05-2014, 04:24 AM

10 4....I usually do an IPA wipe between, but was just wondering

**Todd@RUPES** · 02-05-2014, 09:56 AM

Originally Posted by Nth Degree

If you have a collection of basketballs in sand and use a piece of plywood to move them around then dump a bunch of tennis balls into the mix and try to move those around with the plywood before removing the basketballs, how effective will you be?

The abrasives from the 105 are significantly larger so you will not be getting the results from the 205 abrasives.

While the abrasives may be different, I do not believe they are larger (nor I am positive they are different).

**Todd@RUPES** · 02-05-2014, 10:00 AM

I realize convention says to buff off the 105 first, but why? Is mixing them degrading the effect that 205 will give you?

Anytime you polish, you are removing paint and contamination from the paint. This gets mixed over the face of the pad (one of the main reasons to clean the pad after every section or every second section) as well as mixed into the polishing slurry on the paint. As you have polished you have also "burnt" off some of the lubrication, whether absorbing it into the pad, drying it out, or having it flash off.

When you inject fresh abrasives into the picture, you are immediately mixing them with the results from the previous step. This will overload the lubricants in the fresh polish (as the solid load- abrasives, abraded paint, contamination) mix the picture. At best, you will end up with a finish less than your potential.