Mike Phillips
Active member
- Dec 5, 2022
- 51,004
- 6
How To Wetsand and use a Rotary Buffer
In my detailing classes I share the correct techniques for hand sanding major flat panels as well as how to machine sand using 3M Orbital Air Sanders plus the PC style DA Polishers including the 3" Griot's Garage Mini Polisher as a dampsander.
We use both 3M Trizact discs and Meguiar's Unigrit Finishing Discs in 3" and 6" sizes. After sanding I show how to use a wool pad on a rotary buffer with Meguiar's M105 to remove the sanding marks followed by Meguiar's M205 to remove any holograms left by the wool pad and the M105.
I also show how to use DA Polishers for the final machine polishing step to ensure a swirls free finish on any type of paint with both Meguiar's M205 and Menzerna SF 4500
Here's some shots showing busy, hands-on training and practicing...
Here's Audrey showing the guys how to machine sand using the 3M Orbital Air Sander
Audrey has never machine sanded before so after this class she's going to be able to talk about the topic intelligently and she's going to know what she's getting into if one of her customers asks to have their car wetsanded.
Here she is doing it all by her self...
Perfectly making overlapping passes with a quick arm speed...
Now she's using the Porter Cable 7424XP to do the same thing but without having to manage an air line under pressure trying to control the sander.
Time to hand sand, first I show what not to do...
Then I show here what to do...
She has the technique down but says she finds machine sanding easier and faster...
Here we go over the 10 @ 10 Technique
Frank's turn...
Since I already buffed with the pad it needs to be cleaned first, so I show Frank how to use a steel pad cleaning spur.
Perfect...
Now it's time to remove some sanding marks...
Jay's turn...
Time to inspect...
Lester's turn with the rotary buffer...

In my detailing classes I share the correct techniques for hand sanding major flat panels as well as how to machine sand using 3M Orbital Air Sanders plus the PC style DA Polishers including the 3" Griot's Garage Mini Polisher as a dampsander.
We use both 3M Trizact discs and Meguiar's Unigrit Finishing Discs in 3" and 6" sizes. After sanding I show how to use a wool pad on a rotary buffer with Meguiar's M105 to remove the sanding marks followed by Meguiar's M205 to remove any holograms left by the wool pad and the M105.
I also show how to use DA Polishers for the final machine polishing step to ensure a swirls free finish on any type of paint with both Meguiar's M205 and Menzerna SF 4500
Here's some shots showing busy, hands-on training and practicing...
Here's Audrey showing the guys how to machine sand using the 3M Orbital Air Sander

Audrey has never machine sanded before so after this class she's going to be able to talk about the topic intelligently and she's going to know what she's getting into if one of her customers asks to have their car wetsanded.


Here she is doing it all by her self...


Perfectly making overlapping passes with a quick arm speed...

Now she's using the Porter Cable 7424XP to do the same thing but without having to manage an air line under pressure trying to control the sander.




Time to hand sand, first I show what not to do...

Then I show here what to do...

She has the technique down but says she finds machine sanding easier and faster...

Here we go over the 10 @ 10 Technique



Frank's turn...

Since I already buffed with the pad it needs to be cleaned first, so I show Frank how to use a steel pad cleaning spur.

Perfect...

Now it's time to remove some sanding marks...


Jay's turn...

Time to inspect...

Lester's turn with the rotary buffer...


