The cool thing about Engnath was that he put out a catalog with instructions for self-finishing/making/mounting swords and knives. The legacy of that catalog is still on-line.
The irony here is that as a polisher I have some mixed feelings about how many were finished. When Bob was alive there weren't many doing full polishes. Those who did generally didn't work on these kinds of blades. So his instructions included sandpaper, etching, etc. Most I've seen were finished by the owners with the expected rounding, softness, and lack of definition. And usually the methods used leave you to decide between seeing the differential hardening and having a cleared surface.
Anyway, occasionally I get one in for a full polish. So they go back to full stone finishes and a lot of work usually has to be done to bring things back to a crisp, defined shape. But they're always worth it. Bob used 1050 steel which is capable of really wild activity and significant contrast when traditionally finished. But it is a lot of work.
All that said I recently polished a Bob Engnath katana. I had brought the blade into the house after finishing burnishing when I noticed the blade showed quite nicely sitting on my table. It still needs a bit of work on the tip to clarify the finish. And next is to mount it. But the photo really shows some of the distinctive "Bob" aspects of his work.

