TLDRL: I’m getting layer offsets on the Y-axis, I don’t think it is the belt. Are there known issues?
My wife wanted a cool silk rainbow dragon bowl, so I bought the STL. The filament she wanted was 1.75mm; I’d never used this size but other people reported success, so I bought that too.
I tried printing a couple of small things that came out great, so I started the dragon bowl. It looked great when I went to sleep, but in the morning I saw that the printer had some slips/shifts in the Y-axis:
I saw that one cause of this might be a loose belt so I tightened it a little. Then I tried a spiralized coozie; I figured the issue might have something to do with height, but I didn’t want to use a lot of filament. It printed with no issues:
I then thought that the issue might occur when there is more movement in the Y direction, so I printed to 0.5" sqaure towers about 4 inches apart on the print bed. They printed fine also:
Finally it was time to try the dragon bowl again. Unfortunately, the slippage was worse this time around:
Does anybody have suggestions on how I can fix this? Other platforms mentioned overheating on the stepper motor driver boards - is that something that occurs on TAZ Workhorse machines?
Was it still stuck down to the bed well, or had it become detached? What does the underside of the print look like? My guess would be it’s warping up, and the movement of the Y axis is causing the warped part to catch just enough to interfere with the nozzle during Y axis moves. If it’s still completely and solidly attached to the bed, the warping would be from an overhang curling up.
They are all shifted in the same direction, and if it were a failure of the motor/stepper, you would expect to see failures in both forward and backward movement of the Y axis. This points towards it being physical interference with the nozzle while the bed is moving to the rear.
I had some wonky y axis prints and it turned out the screws holding on the rods were pretty loose. You might want to check the mechanical stuff, make sure all the screws are in place and snug,
The print was still firmly attached to the print bed.
The first layer has some riffles in it, but that is because I’m a little too close to the print bed. It appears that the bed isn’t perfectly flat (despite being glass) or the rods sag a little, because the middle of the bed is closer to the print head than the edges. To ensure the edges get good adhesion, I’m slightly too close in the middle.
There did not appear to be any warping away from the print bed.
I wasn’t watching any of the times I got this problem, so I can’t swear that something didn’t get in the way, but I have no idea what it could have been.
