Hi,
I am having a strange issue. As I am cutting cabinet ribs out of a sheet when it gets to the 2-4th pass (.5mm increments) It starts to bounce up and down. The x/y motor on the left side moves back and forth (See video link at the bottom of post), while the x/y motor on the right continues to operate normally. It continues this motion around in a circle following the tool path it should be on. It also continues to do this jerking motion after being paused/reset in Makerverse and will not stop until I unplug the motors. It appears to always start in the same general region of the sheet (top middle-ish). I have successfully cut many other sheets along this same plain without ever having this issue. I have an XL frame.
All of the rest of the cuts I have been making have turned out great, including rabbits and dedos and I had the machine pretty well calibrated to 1mm. It cuts great until it gets to this particular point and goes haywire. Again I have cut many other sheets right at this same point.
I am using Cam Bam with GRBL post processing and despite some other challenges I have worked through, it has successfully cut many sheets. My only conclusion can be a bad motor. There were some other red flags in the kit that made me think maybe it had been returned. The Z axis bracket was bent and some of the parts looked used.
I have tried:
-Changing the bit
-Altering all parameters in Cam Bam
-Slowing Depth increment speed dramatically
(Video)