A good job Red Three,
The threads look good but the knurling needs a bit more practice. Are you using a single push in, a double push in or a caliper type tool? Either way I think you need to use a bit less spindle speed and go in with a lot more pressure at the start of the knurl. I always start the knurl with only half of the knurl wheel width in contact to get more "bite".
Practice will make perfect.
Cheers
John
Absolutely.
Just to keep things in perspective, I am now hitting some 1991 Bruichladdich which is an extremely fine cutting fluid....
