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In very general terms, of the wheels shown, in order, the first black ones have more stitching and will be stiffer = more resistance to pressure against the wheel. This provides for more cutting. ...

I think you're on the right track Kristian. Thin blades will decarb faster than a thick blade. It's why so many makers leave a little extra on the sides to grind away later. A good VFD is very...

It is possible that ten minutes in a charcoal fire could have burned enough carbon out of the the very thin edge section to make it difficult to harden (decarburization). A charcoal or coal fire can...

Hello Kristian,

The steels you are using in the patterned steel are just fine. How was this steel hardened? Temperatures and times would be very helpful as well as the quench medium. If you...