Drilling holes in saw blades | Blackburn Tools
Jan 16, 2014 ... Unfortunately, a good saw blade has a Rockwell hardness around Rc50, ... Coming back to drill bits, there are two big requirements. ... Most of them will need to be sharpened, which must be done with a diamond stone or a green wheel on a grinder. .... Lie-Nielsen Hand Tool Event - ShackletonThomas
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