six microns

Given that human chromosomes are on the order of 5 to 10 microns, I am thinking this export regulation doesn’t apply to the hobby market. This is “use the machine in a clean room” level precision.

Yeah, automatic posts drive me away faster than anything. Good point on cross posting though, I just followed your advice. It’s pretty much free if your post fits in multiple places and there are lots of nearly empty communities right now.