Okay, I've cleaned up a couple of blades acquired at an antique shop and purchased a couple of others here on SRP and now I need to make some scales.

I have some "Epoxy Resin Blank" material purchased online that is sold as 1/8" thick. Some of it is within a few thousandths of 1/4" and the thickness varies. I've got a belt sander and can take care of the thickness and the inconsistency but that's where the questions come in.

Checked the scale thickness on several of my razors and most seem to be between 0.10" and 0.12", although I have one that's right at 0.08".

Nothing fancy, just flat scales with a bevel.
With epoxy resin blanks and this style of scale, what should I shoot for as far as thickness?
What grit of sandpaper should I start with to take off 1/16" plus of material?

Thanks in Advance