cowboy_dan
Member
How did you put the knurling on it?
A knurling tool on the lathe.
http://www.wttool.com/common/images/product/main/22130010.jpg
Basically two wheels with grooves in them. One wheel has the grooves sloping up & right, the other has the grooves sloping up & left. Since they contact roughly the same area of the part, they make a criss-cross pattern that is the knurling.
It doesn't cut anything, it just pushes the metal around. It takes quite a bit of force to get a good knurl (might also be that the tool I used was dull), so it's pretty hard to knurl small parts unless you get one of the more expensive knurlers that grabs on both sides of the part:
http://www.wttool.com/common/images/product/medium/22130025.jpg