Camjack Knurler

[mickri]

How do you make the adjustments to get more or less pressure? Do you use the 1/2-20 screw or the adjustment screw on the cam?

 

[AmericanMachinist]

Cam screw once the wheels are engaged. This lifts the 1/2-20 nut, pulling the two arms together.

 

[Hawkeye]

You could do without the whole cam mechanism. The 1/2" bolt will provide enough force with a wrench to form good knurls. But savarin and I can tell you that we can get enough pressure by turning the jack screw with our fingers (after the 1/2" bolt is adjusted to suit diameter) to press the dies into the work.

You don't have to use my design. Make your own. That's half the fun of machining.