I have some small plane blades for a vintage Woodworking plough plane that are all 6mm thick, and want to reduce the thickness to 3mm so they will work in an other plane body. (I stupidly ordered the wrong items from USA) They are hardened to about rc60 and I think are carbon steel, not hss. Length about 80mm, width ranges from 3mm on smallest to about 30mm, and all need thickness reduced by 3mm - 0.5mm taken off the back and 2.5mm taken off front .

The only tool I have that would seem to help me is a drill press. (I think my bench grinders would be too difficult) I was thinking of holding the blade in an xy vice and attempting to mill to required thickness in multiple passes .

Any advice on the tooling I should try this with? Or is it going to be completely futile??

One thought was to try with a CBN cup wheel .

Alternatively , anyone with a surface grinder on Sydney north side that would be willing to help would be very much appreciated


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