That's a fair sized CMM! Or a stupid big drill press.:lol: The case looks a little familiar, but can't quite remember (or it's GPU or military)...I do more rotating parts, case shop is a different depatment any more.
BTW, I think SAW dust is too coarse. Sanding dust is much better for your purposes. Might try a local cabinet or fine furniture maker (maybe a hobbyist co-worker) or picture framer.