Laser Cutting High Speed Steel

As previously detailed, the rifling cutters which were made from a broken Brobo blade were unsuitable because I had not taken into account the thinning of the blade due to hollow grinding.

So I bought some high speed steel in the form of woodworking thicknesser blades, which were 3mm thick.  Also, I redesigned the cutters to be a bit more robust, and take a 4mm pin instead of the previous 3mm pin, which looked a bit spindly.

IMG_4473

6 cutters from one thicknesser blade 225mm long, 3mm thick

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3.03mm thick.  Just right.