I was trying to cut threads in 6061 on my 2011 Patriot and needed to take the velocity up in the Mach 3 motor tuning tab. The default setting is approximately 10 ipm but that limited spindle rpm to around 175, too low for clean threads. I took it to 50 ipm for the X and Z lathe axes and ran a sub-routine that moved each axis 50 times one inch up and then returned it one inch down. After zeroing out my Jenix and the Mach 3 screen DROs, at the end of 50 runs, the Jenix was off by 0.0004 on each of the Z and X axes confirming that I was not losing any steps. My spindle speed for threading can now get to 800 rpm. My acceleration is approximately 10 i/sec/sec on the Xand Z axes
I was curious what settings others used? I now worry that I need to add home and limit switches as the saddle now moves quite fast. Has anyone added them to their Shopmasters?
Joe
ps: I'm new here and originally tried to post this under the Shopmaster forum but could not find a "new post" button. Apologies if I posted to the wrong forum!