Hi all,
I’ve had my longmill mk2 for over a year now. I’ve had no issues zeroing it out or operating it until now.
An important note is that I’ve run this exact gcode before without issue. This is proven code.
Today before I ran the first tool path for this job it randomly dipped into the table 8mm then retracted and did the job as normal. I figured weird but okay I’ll let it go for now. Then at the end of the job it dipped into the table again and seemingly tried to home before I hit the e stop.
Luckily I caught it before it destroyed the part. So I put in a 1/8" endmill and loaded the next toolpath. I carefully zeroed the new tool and made sure the zeroing was correct. I got start and the tool immediately plunged into the table, this time much deeper, and tried to move on the y axis before I hit the e stop.
I read things about static interference, though Sienci says this should only interrupt connection; not cause rogue behavior. Nevertheless I removed the dust shoe for the second toolpath where I described above, and it still crashed.
Weirdly, after the issue I noticed the z height zero had moved and was precisely at the level of the waste board. Idk if this is coincidence or
not.
I’m at a loss. It’s so odd to have the issue arise randomly, and on code that produced a perfect part previously. I’ve attached photos for reference where it gouged the table. The zero point was on the front top left corner of the stock I started with, right above the smaller gouge.
Any helps or suggestions would be greatly appreciated. Thanks for reading.