CoolHandMike

Trying to troubleshoot why my Y-axis stepper goes into berserk mode all of a sudden. It's very reproducible with this print after about 25 minutes: https://www.thingiverse.com/thing:275... Video of the fault (after a few infill passes; skip to 2:35): Things I've tried, to no avail: Reduced the Y acceleration from 5000 to 2500 to 1000 Adjusted the trim pot on the driver both ways in 1/8th increments Changed the infill from cuboid to grid Reduced print speed from 60 to 40 Ensured belt is tight and not slipping Replaced Y-axis stepper with a new one. Already noticed it is operating much cooler and quieter (original stepper would hit mid 40's C during normal printing whereas all my other ones rarely hit 25°C. Still failed the print at about the same time. 😠 Reduced print size to 75% (I noticed that the walls have just a tiny width of infill(?), and when the printer hits this layer, the back-and-forth is shaking the whole machine. I thought reducing the print size would eliminate this "wall infill" but it only did slightly. Print went much farther before the dreaded Y-axis shift appeared. Maybe 30 minutes.) Reduced infill speed from 60 to 30 mm/s on the 75% print size. This one went 45 minutes before it failed with a Y-axis layer shift. That's where I called it quits for the night. I have many other successful prints but this one is driving me insane. TIA~ Setup: Anet A6 frame and steppers with KFB3.0 motherboard and Marlin 2.0, Cura 4.4 slicer set to draft Edit: Just tried the same print with Prusa Slicer and default settings and it printed perfectly. So now I need to figure out what settings in Cura are causing this. Any ideas?

Hi r4ph, Thanks for the suggestion. I tried to enable the Radeon driver to launch Cura as you have advised, but there is still no simulation preview. I will try again on my laptop (which has a Nvidia GTX 1060) and report back.

Hello, I created an account in order to get help for a similar problem. I also do not have any kind of simulation preview in Cura 4.4. Is this because I'm running Windows 1`0 and not a Linux-based system? My graphics adapters should be able to handle this (2x AMD RX 480 8Gb). Thank you in advance.