To the OP: even when you are a knifenut, don't use the 88 pianohammers for deburring. Too soft.
I cleaned up my 240mm gyuto with some fingerstones a few days ago.
Blue really is a nice color:
And instructions from Matus re spot on! Diffuse light and under exposure!
Finally my Watanabe has arrived:
On day latter and a picture I also need to post in the tread: My favorite