Two questions - first, I am trying to part off some 1 1/2 inch Hastelloy X. Using a HSS parting blade, either it turns too slow and skids rather than cutting, and if I turn the speed up it cuts for a few seconds, then the tool overheats and wears away rather rapidly.
I can't find a happy medium speed, I think a carbide blade would snap, and a hacksaw doesn't seem to actually cut at all - any other suggestions?
Second, I am planning to buy a rotary table. The ones in the size I need have a short MT2 hole in the centre. My question is, how concentric is that likely to be? If I turned a piece on the lathe fixed to a MT2 stub in a MT3 adapter in the MT3 hole in the main shaft of the lathe, then transferred it to the table, approximately how accurately would the concentricity be maintained?
Ta,