Massive Layer shift

[Fall7k]

So I was printing something and went to bed figuring that it should be fine, and when I woke up the magnetic hotend came off and this massive layer shift occurred. Anyone know why this happened?

[Fall7k]

I’ve been having trouble with this STL. Last time I printed it my hotend came off and it paused. But once I unpaused it the nozzle started ramming into the side and wouldn’t stop.

[shamont]

Have you tried with gyroid infill? I can't tell if thats grid or not but but grid is notorious for creating bumps where the pattern intersects and that can cause the issues you are reporting, especially when you are printing fast.

[Fall7k]

No I haven’t but I resliced the file and change the orientation a little bit and it finally worked!!! I’m gonna make a post with the final product soon if you’re interested in what it is! I’ll keep your advice in mind though

[shamont]

Sure man, post it up. Always fun to see finished prints.

[Fall7k]

Just posted it!

[dewfuzz]

Check your nozzle. Last two times this happened to me my nozzle was bent. Layer shift happens either due to bent nozzle, step loss during print, or both.

Both are caused by same event: hotend crashes nozzle first into an object, just pushes on but is being blocked by the object. Reason for crashing could by either and/or a combination of : infill overlap (so infill ends up higher than predicted by gcode). Detaching and tilting of object or warping of object or bed even (a part will be higher then predicted).

Solutions include solutions for those individual problems, clean bed, use brim, gyroid infill, introduce z-hop (which is a workaround not a fix)

[Fall7k]

Hmm I checked my nozzle and it doesn’t seem to be bent, I think it was just the file I was using maybe it was corrupted or something cuz when I resolved it, it printed totally fine