8783
« on: April 30, 2012, 03:00:56 AM »
Rich
That one was found when I made a typo here at home, suppose its a bug in a way but really cant see how it would be harmful as the intention would be to do a G0 or G1 move anyway. The worst that would happen is if you had previously done a G1 move then commanded D0 rather than G0 the axis would move at the previous feedrate rather than a rapid.
Jayson
Few ways to do a left hand thread.
1. Tool placed upside down and spindle reversed and feed normal direction.
2. Tool placed at opposite side of work, spindle reversed and feed in normal direction
3 Tool correct way up on normal side, spindle normal direction but feeding from chuck to tailstock.
With 3, you would have to provide an undercut at the start so that your tool doesnt rub whilst waiting for the index and also if your accel is relatively slow you would have to have that wide enough so the axis has a chance to accelerate to full speed before it starts cutting.
Hood