A strange case of layer shifting indeed. I have been working on this “refurbished” Taz 6 for what seems like a long time (on and off) for my work place, and have gotten to a point where a test print can be done.
I’m finding that with a test print there has been layer shifts on one side of the print only (as of right now), and I’m not sure if I just need to readjust the Y axis or if I need to start messing with the X and Z axis as well.
What has been done to this point:
- changing the step motor on the Y axis
- changing the mother board in the control box (this actually fixed the initial issue of the machine with the Y axis vibrations)
- changing the Y axis belt clamp to help with adjusting belt tension as needed (old clamp was a very old version of the part)
Every adjustment so far has dealt with the control box and Y axis… but this still looks like it might be an issue with Y, I just don’t want to rule out X or Z if there is a possible thing I can look at with those.
Those are not layer shifts. The dots in the die all line up very nicely. This is not possible with layer shifts.
What I do see is severe underextrusion every layer change.
Could be completely wrong pressure advance settings, a backlash issue with the extrusion motor/gear, or something up with the retraction settings.
Comparing the missing parts of the model with the seams (and toolpath immediately following) in the part preview would probably correlate pretty closely.
I did do some adjustments with the belts on Y and X just to see if anything changes and did a test print. There is only a minor shift at the corners of this print but I would need to do another test print to triple check as the side that showed the issues initially was a blank side this time.
However, seems the Y idler mount was cracked and cracked even more so I need to replace that. (the extrusion issue was because I initially forgot to adjust the Z Probe Offset)
You’re overextruding now.
That’s why you’ve got the extreme elephant’s foot across multiple layers, very rough top surface, and the corners that are bulging out.
