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Or you could just get what you need for the missing grits. I'd love to see the 1 micron finish though. Joe uses that for spot cleaning of otherwise clean razors.

Nothing I wouldn't do for a potential guinea pig :D Let us know how they work out for you and I may place an order with'em.

You can buy them from Otto Frei (google them). Joe said that the mandrel that fits the 5/8 discs should go into a Dremel. You need to stack about 6 of them per grit but they should be ok for dozens...

I didn't.. I was trying to find a good way to use the 2" or 3" ones without buying a Foredom, which is way out of my budget.

1.5" diameter and 0.5" thickness. The 400 grit finish is a half-decent satin. To go finer you need to make Jason's drums or use radial bristle discs as fine as 1 micron.

They're top-heavy so you need to slide them all the way in and make sure you tighten well.