Welcome.
Most guys refer to leaving a dime as to the thickness of the flat after rough grinding is done and before heat treat. It does depend a little on the size of the blade your grinding. A large to medium hunter, leave the dime. If your making folders like I do, I leave about half that. You grind too thin befor heat treAting and it can lead to cracking or warping on the edge of the blade.
Erik
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