I put the dial guage on it and the variation was 0.006-0.008". The first thing I noticed was that the chuck seemed to be off-center. I set the belts for the slowest rotational speed (166 rpm which should give me about 33 fpm), mounted up a 3/8" right-handed cutting tool, and fired her up. It had a highly polished shiny silver finish, but other than that I had no idea what it was made of. Next I mounted up the 3-jaw chuck (Kobiyashi/Victor) and popped in a piece of 3/4" steel stock. So can I believe the screwfeed ratios on the plate on each compound gear set, or do I need to perform some calculations to determine "equivalent ratios"? it appears to be a 32-tooth gear on the end of the headstock shaft driving a 24-tooth driving a 32-tooth. Maybe my screw feed compound gear sets are from a slightly different lathe? I'm assuming that the gear that drives the compound gear sets rotates at the same rate as the headstock. For instance, a 60-tooth gear is specified for a number of ratios, but I only have 56-tooth gears. I don't seem to have a lot of the gears required. There's a chart inside the headstock gear cover showing various gear combinations to achieve different screw and feed rates and.this is odd. The other evening I hooked it up to power, and cleaned and oiled it. I've done some introductory reading as it came with the original Owner's Manual, and I've ordered a copy of the Southbend "How to Run a Lathe" book. Tool holders, bits of various sizes, chucks, backing plates, steady-rests, drill chucks, centers, and a whole lot of other things I've yet to identify. It belonged to my wife's grandfather, and came with a HUGE variety of "parts". I'm pretty excited to learn how to use it looking back on the past dozen things I've had done by machine shops probably 10 of them could be done on this lathe if I had the skill. As the title to my post says, I am now the proud owner of a Craftsman/Atlas metal lathe.
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