Since some time I have Z-Wobble/Banding problems on my A1 Mini, previously the prints were nearly perfect :c
It is the most visible when printing multiple objects
I tried temperature and flow calibration, lower speeds, different filaments, lubricating, tensioning belts
My mini does the same thing although not this bad. I contacted support and they couldn’t resolve it. They sent me a model which, of course, printed fine. I believe the extruder motor is overheating. What I’ve noticed is that the first few prints of the day are perfect. But the longer I print continuously, the worse the print quality gets. And the extruder motor gets so hot you can’t touch it.
Hey, I have the same problem with my A1 Mini. Unfortunately, I’ve had it since the first print.
I haven’t found a solution yet, but I hope someone can find a solution here.
Get a brand-new (preferably name-brand) microSD card, recreate the filesystem and retry your prints. I had the same on my A1 intermittently, destroying print after print. Thought it was the USB cable, but nope: shipped with bad-quality SD card.
After my experiences with resin prints failing for the same reasons, I don’t know why I didn’t just replace this one out of the box.
Your comment on the extruder motor temp is a bit worrisome, for sure. That’s the one symptom I didn’t have. Print behavior/banding look the exact same (I had some layer skipping, too).
Hopefully the support ticket resolution fixes your issue. Let us know what it ended up being.
This happened when I printed a scaled-down version of my BMW with a 0.2 mm nozzle. I printed the same model with a 0.4 mm nozzle, and there was now issue.
