Could one of the hone experts identify this hone that I recently picked up at a boot sale ?
It was originally jet black and thick with oil which I scraped off and then cleaned with a degreaser and finally finished with my diamond hone.
It is extremely hard and if fact quickly wore my diamond hone down and has an extremely fine glass-like surface.http://www.picresize.com/images/rsz_p1040834.jpg
