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Tmac,
Yes, not only have I thought about it I am working on the design. I also want to make a lot of the pivot polishing tooling that is no longer available. Last week I purchased some special cutters to make these things. With me the issue I have is lack of time.
I want to make a cross slide that positions with dial indicators. My experience is that the dials on the handwheels are virtually useless. After many years working with many lathes, the only lathe that had a handwheel dial that was accurate was the Hardinge HLV Super Precision Toolroom Lathe. With that lathe when you dialed in .0001 on the dial, the digital readout would read exactly the same thing and the cut would be exactly that. The spindle runout was guranteed to be no more than 25 millionths of an inch. Pull up a picture of one of these incredible machines on the internet and take a look. The only other lathe I would put in that class is the Derbyshire Instrument lathe. It is a small 10 mm lathe but is larger than an 8mm WW lathe. Tale a look at that as well at F.W. DERBYSHIRE.