New knobs for the barbie!

[skotl]

Id have used a 3 jaw chuck for that and just took a small cut to get it to ound if it was way off.

The three jaw was in the electric bath, and I figured it was a good opportunity to play at getting the 4 jaw tuned in,

But, yes, it wasn't a super-accurate job and the three jaw would have been fine

 

[Screwdriver]

Are you a butcher by trade by any chance?

Anyhow, so far as I am aware there are no issues at all with just running the knurling tool the length of the knurl with power feed. The knurls will take care of themselves to find the correct cutting path.

Slowish speed, plenty of pressure, lots of cutting oil (WD40 for al). If I am remembering correctly, I am pretty sure last time I ran the tool over the part several times! it just works. Forgetaboutit.