What all do I need for DA wet-sanding?

[tcrummitt87]

Hi! I was curious about what all I would need to use my Griot's Garage 3 and 6 inch machines to wet-sand. I was planning on purchasing Meguiar's 3 and 6 inch Unigrit foam interface pads and either 3M or Meguiars foam sandpaper discs.

Do you need to get the Unigrit backing plates too? I don't see why this would be necessary but I just want to make sure.


Thanks!
Tim C

[hernandez.art13]

This one?

Meguiars Unigrit 3 Inch Professional Backing Plate and Adaptor Kit, backing plate with adapters, meguiars backup pad

you should be fine with the backing plate you already have

[tcrummitt87]

thats the one, thanks! I just want to make sure

[Mike Phillips]

Lots of info on how to machine wet sand in this article PLUS this article shows all the different products and tools with links to the store.


Damp-Sanding Tools, Tips and Techniques by Mike Phillips


In my opinion, machine wet sanding is the best way to go...


Also, the primary difference (that I know of), between 3M Trizact and Meguiar's Unigrit discs is the Trizact discs start cutting instantly while the Meguiar's Unigrit discs need to break-in first. That is the medium that the abrasives are embodied into needs to break down to expose the abrasives. What this means is you won't see the Meguiar's discs cut instantly, instead you need to make a few passes and then they will start to cut.

Also, 3M goes all the way to #5000. The highest you can get with Meguiar's is #3000





Approximately 1/2" thick

[Mike Phillips]

Also, Meguiar's says don't add any soap to your clean water for sanding, the medium takes care of lubrication.

3M does recommend a few drops of a car wash soap in your clean water supply.

[tcrummitt87]

thanks so much mike! always helpful!

[EvolutionDetail]

Also, Meguiar's says don't add any soap to your clean water for sanding, the medium takes care of lubrication.

3M does recommend a few drops of a car wash soap in your clean water supply.

Hey Mike, I actually uses ONR solution with my wet sanding. Could that be a factor that kills my discs faster?