First off, I’m running the LongMill 30x30 MK2.5 with SLB and limit switches.
The issue I’m having is that the z-axis will lose its zeroing mid-project and rise a random amount (less than an inch) at random times during the process. It has been happening while doing a rough carve at random points in the program. When it happens I hear the z-axis chatter as if the lead screw is being pulled through the anti-backlash nut instead of rotating through it.
Any suggestions?
Hey Jim,
Sounds an awful lot like your z is stalling on the way down. You might wanna look into the bits and bolts that is holding that contraption together. Some solutions on stalling axis is given in the quick fix part of the manual of the longmill.
You wanna skip the arduino part for.. like.. you don’t have that.
Thank, I’ll give that a try. I totally forgot about that troubleshooting section. Too many documents to remember!
@jimzdrojewski If Z is chattering, check to ensure you are not bottoming out. As I don’t have limit switches, I may be all wet here. Maybe you can’t bottom out as the limit switch will prevent that. In my case, I have had instances where Z raised to the full extent, then “chattered”, and instances where it bottomed out and “chattered”. When it does that, Z0 is lost and all bets are off.