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wormwood said:http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=46132
It's a 4" Rotary Table, very nicely priced. T Slots should fit the mini-mill (if you have a clamp kit). I don't know how much use it would be for a regular drill press, though.
wormwood said:The stepper alone might cost more than the table, especially the 250 OZ type.
I've seen a few inexpensive 6" rotary tables on eBay from time to time, but unfortunately 6" would be way to large for me. I don't own a mill yet (still on a drill press myself), but the best mill I could ever hope to afford is the mini, and anything larger than 4" would be too large.
With creative uses of clamp kits, I've seen some pretty large projects done on a 4" rotary.
Putting a gear on the handle wouldn't be a problem. Mounting the stepper could be a pain, as the base looks to be hardened. I don't know if there is enough clearence for the worm gear if bolts were used, a strap going around the outside might be an idea. If you have an extra channel on your CNC, a 250OZ bipolar chopper could probably be had on eBay for cheap. Getting another channel can be very expensive.
junkymagi said:Have you ever used an etchasketch?
Try making a circle with the two knobs, that's basicly what you have to do on a 2 axis cross-slide vise to make a spiral.