Beall Polishing System #2: Sanding mops

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Since the motor mandrel with the Beall system takes a 3/8” bolt I’ve made several sanding mops.
First was a 320 grit for finish sanding in general. That worked well enough so I made a couple in 220 grit, a thick one and a thin one.

This past week I started making a mass production of challenge coin holders and decided I needed to up the game on the sanding mop. I wanted to sand the 2 1/2 inch wide holders in one pass. So I needed a sanding mop at least 3 inches wide.

I looked at several youtube videos of folks measuring, cutting, punching, and that seemed nice.
But after a couple of years of using a mop made out of square pieces of 4” sanding belt I decided to throw caution, and accuracy, out the window and go bigger.

I went to my local American Maintenance Suppliers (a real garage man-cave store) and snagged a half dozen 3/8

Beall Polishing System #2: Sanding mops