The diamond drag tool now in the MPCNC LM3UU holder has appeared in several holders and suffered considerable misuse along the way:
A closer look at the spalled section on the flank:
The tool in the (much better) CNC 3018XL LM6UU holder has engraved mostly plastic, plus a few hard drive platters, and seems only slightly rounded:
An unused tip comes to a neat point:
As does its companion, arriving in a twofer deal from halfway around the planet:
They’re brazed on 3 mm OD shanks and ground to a 60° included angle.
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