I got the old Dyna tuned in pretty well but I had to back the rapid down to 15 IPM to avoid lost steps. I think that's as good as the stock drivers/steppers will do, though I have a hunch that new drivers would work wonders. The backlash in both X and Y stinks at 0.002" but any more tweaking on the anti-backlash nut stalls the axis. I ran a 30,000+ line program today (took 2+ hours) and all went well other than me futzing up the tool change (wrong Z offset) so the finish pass left a lot to be desired. But, heck is was just wax after all.
Now that it is running good I would like to get some new tool holders; called Dyna today and they can only get the 1/4" shank (guess I could bore it out) for $85 and the 'quick change nut' is $70. Does anyone know whay type of tool holder these machiens use? There is a measured drawing in the manual but it does not state if it is a standard taper or not.
Thanks,
Jeff