My razors get the finishing treatment on 2 different balsa strops.
The first is covered with chrom oxide followed by a ferric oxide one.
HHT is passed with ease.
The edge is almost mirror finish but there are slight scratches visible on a x400 pc microscope.
Is there any oxide that is finer than the .2 micron ferric?
I'm a bit ocd and always think I can improve an insanely sharp edge
I'm sure you can relate