The New Hotness

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.