Have a Lulzbot mini - don’t remember when exactly I got it, but it had been running Cura 21.02. Wanted to do a print that had varying infill in a model, and based on what I could see from the internet, that was a Cura 3.x feature not something I could do in my older version. Here is what I did today.
- Did a test print in 21.02 to make sure that everything worked.
- Downloaded 3.2.32 and connected it. Did a test print to make sure that it worked.
- During the test print it nagged me about updating the firmware - so I did, storing my e-steps and z-axis offset.
- After updating firmware, I ran the M commands to update z-axis. E-steps were same so I did not update that.
- Tried to do another test print - this failed miserably. The arm at the top (with the hot end) moves all the way left, but when it hits the edge of the printer it tries to keep going, leading to a really loud annoying knocking sound (likely as gears are trying to force their way). The first couple times I heard this I aborted and turned the printer off, but I did let it go for a little longer once to see if it improved. After the gears grinded for a while, things stopped. I aborted.
- Did a quick forum search and read about other problems with 3.x.x, so I installed 21.02 again, verifying that it was connected to a lulzbot mini, and did the firmware upgrade from the menu in that program. I assumed this would downgrade the printer back to where it was before.
- Printing in 21.02 now does the same thing. I can turn the printer on, open up the control, and move the X left and right, and also adjust the Y direction, so I still have ability to send commands, just something is broken. Maybe a startup script, I’m not sure.
Any suggestions? Would be nice to upgrade to 3.x.x but if the best I can do is downgrade it back to 21.x then I’m totally cool with that, as this setting was for a single project, not anything I can’t live without .