Gene Howe wroteI've seen similar photos. I've fleetingly considered looking closely at my cutting tools. Then I discard the notion because I guess I just don't want to know. :D
When the normal indicators of wear appear, They are cleaned/replaced/sharpened. Being the worry wart that I am, I don't need the added emotional stress caused by close inspection of my 10 year old rip blade:eek:
I was pleased to find not evidence of abuse other than some tar and resin that should have been cleaned off. I found no chipped carbide and no evidence of cracks where the carbide joints the steel.
What I guess I learned was that I don't clean the blades either as often as I should or as well as I should.