Hi everyone, I just received my TAZ in the mail and have been trying to get it set up and calibrated. I recently tried printing the octopus.gcode file to see if I can get mine to match as close as possible the octopus print sent with the printer. The first time I tried, it was ok (My #1 picture below), but I noticed the bottom was not perfectly flat like theirs, and the legs were a little stringy, so I decided to try lowering the Z-index a little.
When I printed again, the bottom was nice and flat, but the print shifted quite a bit (My #2 picture below). I stopped the print early, and raised the Z-index a little to see if that is what caused the problem (didn’t think it did, but I just wanted to get it back to where I started at least), and I could see that the shift is still there, just not as pronounced (My #3 picture below).
I’ve been reading through the forums and thought perhaps a belt was slipping or a screw was loose somewhere, but I can’t find anything that looks wrong. Does anyone have any suggestions for how I can go about diagnosing where the problem is? Are there perhaps other prints I can use that will help detect which part has a problem, or something in particular I can look for while it’s printing? I have checked every screw I can find, every belt, etc, and things seem ok, but this is my first printer and I must be missing something. I thought perhaps I’d messed up something with the Y axis because before I started seeing the shifting, the cables coming off of the bed obstructed the Y-axis end stop and when I homed the Y axis, the motor kept running even though it was already as far as it could go. I stopped it and fixed the problem with the cables, but I figured maybe something got screwed up. I can’t figure out what though, the belt seems tight and the screws seem fine. Any help is much appreciated!
Original sent with the printer: