low_48
Member
(Edit; I asked about a mandrel, but should maybe have used a different term. I don't mean a pen making mandrel. Maybe a pin that locates in the bored hole in the steel blank. Used to locate the piece of steel for the rest of the machining. Edit} For the best accuracy, do you bore the hole, they mount through that hole to machine the rest of the bushings? Or, do you use center drill, then jobber length drill, to minimize the chance of runout? Do you ream the hole, or just drill? Just thinking about reducing tolerances to make great bushings.
Last edited: