First Build 5 x 12 Steel Frame CNC router

[Boyan Silyavski]

No I am not sure, its very possible your machine is snappier I will have to take a look at your video, pretty hard to compare on video I suppose. Anyway, I was just going based on the settings in Mach that I had in at the time, quiet difficult to confirm at what speed its running. Also I was just jogging at a % of max (I am not sure if that % reduces both the feed rate and the acceleration) If both then what the video shows would be slower...

I agree, its difficult to guess from video. All I was saying that you have to check that acceleration in Mach3, the plugin you are using and the drives. If either one of the 3 is set differently then its the lowest value active in reality. Though i dont know CSMIO and if you have to set the acceleration in the plugin separately, so yo better check manual.

My motors are only 400w but i assure you when i raise the acceleration snappiness from the servos themselves, its like shooting a bullet. Thats the sound how machine starts and stops. In fact my problems when tuning were related to Undershooting, cause i was not brave enough at first. So problem was it goes to position fast and then you could see how the motors for a millisecond were further positioning it in place. So i thought i am Overshooting. Yes but No. When i raised the servo response this disappeared. So auto tuning did not work i my case. Also it would be better if there is a total gain adjustment which auto adjusts all details, instead of separately adjusting each parameter. Which by the way is well described on many places around the web, but i still fail to comprehend it entirely .