Thanks for the tutorial.
I have to share this with the other novices....
What do you do when you use the knurler and just get a spiral cut going one direction instead of a crosshatch? I had that situation last night. I tried many different things to correct it, including moving the knurling tool up and down. I could see both wheels turning, so I was at a loss as to why the second wheel did not seem to be cutting.
After a lot of staring I realized what I'd done. I had just finished counting the teeth of the 3 sets of knurling wheels that I got with the tool. My eyes aren't great so it was a hassle. When I was finished, I accidently split up the medium and corse wheels, so each set had one of each.
I did not notice the mix up when I installed the wheels back in the knurler. The medium wheel and the corse wheel both tracked pretty much the same at this diameter.
I would have been even more confused if I had split them and had a corse righthand wheel mixed with the medium left hand wheel. That would have produced an offset crosshatch.
Daniel