I'm not following that.If you're milling the ends , why not use a sine bar or protractor in your stationary vise ?
I thought of that but the fixture, I figured, would have some kind of clamping mechanism so why not just go with a smaller removable vise.If it’s a part you plan to do repeatedly why not just build a fixture?
The Sherline milling vise is sized just right to be the perfect working companion to the Sherline milling machine. The jaws are 2.00″ (50.8mm) wide by 1.00″ (25.4mm) deep and open a full 2.00″ (50.8mm). The fixed jaw has both a horizontal and vertical “V” groove to facilitate holding round bar stock. The vise includes two clamps for use in attaching it to the milling machine. These clamps are the same as the 4-jaw hold-down set.Yup, G0678 knee mill.
I was thinking something like this but I cannot find overall dimension specs for this anywhere.