You need a science or engineering background

to do this. First of all, human hairs can be so thick and they can't vary between 50 to 150 microns. If you don't know, you can google to find out. Just don't do this kind of trick to claim you are always correct. Secondly, E D T is not rolling or pressing, you need some engineering background to understand it. It is absolutely not a pretreatment for any coatings! Finally, do not register female IDs to carry this on anymore. Any misleading info can get people sick!