TOS-KURIM CNC Upgrade

**Neale** · 08-09-2020

Sorry - forgotten that bit! Trouble with following multiple threads over a period of time....

Looking back over the current problem, though, it is a bit odd if there is the same absolute error on test pieces of different sizes. That isn't a simple scaling (PPR) error. Sounds more like backlash, but that doesn't fit with the observation that internal cutouts are correctly sized. I think that I would do a backlash check anyway, if only to eliminate it from enquiries. Easy enough to do.

**JAZZCNC** · 08-09-2020

Sounds more like it's following errors to me, I'd be looking at PID tuning the motor to drives again rather than Steps per, if the servo/Drive tuning isn't right none of that matters.

**JimJam** · 09-09-2020

Originally Posted by JAZZCNC

Sounds more like it's following errors to me, I'd be looking at PID tuning the motor to drives again rather than Steps per, if the servo/Drive tuning isn't right none of that matters.

AAh Ok, this sounds much more likely to be the issue then. I am fairly happy with my knowledge on setting up with regards to CAM and posts/coding so was fairly happy that was right.

but with the tuning I literally had/have no idea about what I'm doing! I'm away at the moment but when I get back at the weekend I will grab some screen shots of the tuning software and my settings for you guys to have a look at if you wouldn't mind?