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« on: January 23, 2017, 09:08:01 PM »
Todd774,
I am not sure what MPG you have or what controller you are going to use.
I use an MPG directly plugged into my HiCON controller, with HiCON controlling it and it works fine.
HiCON may be more costly than other drivers, however it is more robust than others who still are making lots of corrections.
We converted a mill to CNC and are using Level 5 ball screws, normal ones are Level 7.
All ballscrews when they are small have accuracy issues, so the larger they can be the more accurate they will be.
I only use .01mm as it is equal to .00039" increments.
Going to .001mm is just to fine (.000039) and requires a lot more micro steps and virtually zero back lash which will never exist on hobby equipment.
I also have some USB VistaCNC MPG's one early version with a questionable Mach4 plugin driver and a later version with a more reliable Mach4 plugin driver.
I am using Mach v3233 which matches the latest HiCON plugin drivers.
I would not use the keyboard for MPG.
MPG for tool height setup with say .1mm tip cutter requires fine MPG control and we normally use a brass shim to ensure the tip does not get damaged.
Backlash also need to be at minimum on the Z axis.
You need that accurate touch and feel when setting cutters up manually.
Regards,
Mauri.