I turned a larger, cheap $25 clamp-style 2" knurling tool into a rear mount knurler for my Taig Microlathe 2.
Cut the bottom of the "T" so it doesn't bang into the motor as the carriage approaches the headstock.
Mill or grind the bottom of the T's left/right cross bar so it slides farther into a Taig tool post. This also let's it fit more easily into the tool post.
Grind the end of the left side of the cross bar so it doesn't stick out farther than the bottom of the tool post.
Mount this behind the work piece, like you do with a rear cutoff tool.
Mount the tool post so the little square nut just barely is in the t-slot of the carriage.
Pinch the arms onto the work piece and tighten the top knob. Then tighten it some more.
Go slowest speed.
