Q2. I've never had the need to mount the one up that came with my 14x40 lathe until recently. Something is wonky but I cant figure out what. I spotted some run-out & determined there was a bit of daylight showing between the plate hub & lathe spindle boss. The D1-4 pins are not clamping quite right & it took a slight bump to release the plate as opposed to my usual nearly drops off with D1-4 chucks after 1/4-turn release click. I measured all the pins, tried resetting the height 1 turn in/out in case they weren't set right. Even swapped all positions thinking they got mixed up. Nothing seems to be improving it. Then I removed the pins, blued the tapered spindle nose, pushed the plate on & gave it a slight turn. I was fully expecting to see a bad taper cut but it doesn't look too bad actually, decent blue transfer. Repeated with jiffy marker & now it shows some slight non-contact but not appreciably different than my chucks. My gut feel is maybe the nose taper is ok & the culprit is D1-4 pin pattern is either not concentric or something amiss with the pins/scallops. Maybe it shrunk sitting in the corner all those years! I figured for the price, maybe just get a new one & deal with how to remedy this later. Any thoughts?
Q3, I have a spare D1-4 unfinished lathe casting back plate adapter normally used for a chuck. It fits the spindle perfectly. Its not married to any chuck so I thought how about machine it true in-situ & then mount a plate to the front to mimic the CI integrated faceplate. I'd have to bolt it onto the adapter casting & then clean up face true, mill the 8 slots etc. Its a bit more project than I wanted to tackle but it brings up other ideas like say a tooling plate with an array of threaded holes for holding odd things that don't lend themselves to slots. Unfortunately I don't have CI slabs but have some 1/2" cast aluminum tooling plate. Would this be a not-so-good idea given the weaker & dissimilar material acting as the plate?