I have a TAZ 6 that over the past couple weeks has started shifting midway through longer PLA prints. I have been trying to troubleshoot it using info from various sources, but so far, no luck.
A few details on my TAZ 6 and things I’ve tried:
- It is less than 2 years old - most prints I do are 6 hours or less. I don’t run it 24/7 at most a few hours a day and there is not a lot of wear on the machine (looks new).
- It is in an enclosure - however the electronics have air pulled in from outside the enclosure. I have a thermometer inside the electronics chamber and it stays 65-70F when printing. I also added heatsinks to the top of the driver chips as a troubleshooting step (assuming Y driver was overheating).
- In addition to the electronics chamber, I have a thermometer inside the enclosure - temp is normally 65-70 and I leave a couple doors open when printing PLA.
- I mainly use PLA and haven’t tried any other material - trying to fix it with PLA first.
- It seems to only shift halfway through prints over 4 hours.
- It is always the Y Axis that shifts (see attached image).
- The size of the part doesn’t make a difference: ie I’ve printed things as small as filament clips and it will still shift.
- I did a 16 hour print a week ago and it did NOT shift - not every print shifts.
- I’ve checked the stepper motor, shaft set screws, belt tension, and as many mechanical things as I could think to check - all seems ok.
- The issue happens with brand new filament rolls that I know are not tangled.
- Most 2-3 hour prints do not shift.
Before I start replacing stepper motors and Rambo boards, I wanted to see if anyone here has any further ideas I could try.