Just made a 22mm Mild steel peg with MT2 taper for my mill mounted rotary table chuck, i used a few slips of paper to improve the fit. fitted the tee slot studs thru the chuck and dailed it up on a Baty 0-10mm plunger type indicator.
was reading a runout of 0.28 and i clamped down one of the three tee nuts, through rotating and carefully tapping either side with a plastic mallet and then rotating it again and again, i was able to bring the run out to 0.02, this is good enough for my general work, very pleased with the quality and rigid setup of the dial.
It will certainly stop my hole patterns from wandering off, it just goes to show you dont need sophisticated equipment to sort this type of problem out, just to be a little careful and only tapping the mallet til it reads half its value to 0 on the gauge. I suppose i couldve made a better fitting plug but i wouldve needed to dial it up anyway, i didnt want to push my luck to 0 runout because my wrist is aching from slowly rotating the 4" chuck on its worm gear 😛
Michael W