Nozzle dragging/clashing during printing MINI+
Hello,
I have a problem with my mini+. Every time I try to do a somewhat larger print the nozzle seems to clash/drag on the previous layer. The end results will often be that after a few layers - or even mid print - the entire print can detach and be pushed around the bed. So at this point I am not confident to leave the printer unattended.
I have repeated the first layer calibration a few times and everything looks pretty good. I have also done some pretty decent prints, but only when they are rather small in the XY plane and I locate them towards the centre of the bed.
Another thing I have noticed is that if I add brim to the print, the nozzle will leave trails.
I attach a few photos of my most recent failure. I think, but can't be sure, that the issue might be quite localised in the area of the bed where you see the damage. However, I meed to test that further, maybe put a straightedge on the bed etc.
If anyone has some ideas about what might be going on I would really appreciate it.
James
Z-offset
It looks like your z-offset is too high which causes poor adhesion. The nozzle is disturbing or detaching lower layers because they are not squished down on the bed enough. Try https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/ for a more accurate first layer calibration. It is also a good idea to change your bed leveling to 7x7.
Mk3S+,SL1S
Sure feels like a live z calibration issue but I would also check for xz skew if you're seeing it mostly on one side of the sheet: https://help.prusa3d.com/en/article/xz-axis-skew-correction-mini-mini_158518/
thanks
Thanks so much to both of you for your suggestions. The XZ alignment was indeed a little out and I have fixed that. I also took note of the alternative first layer calibration approach and will be using that with a vernier to get the level dialed in. Unfortunately I now how another issue of a clicking extruder that just appeared as I was printing the calibration print. Hopefully I will be able to resolve this and get back to printing soon!
re: thanks
Unfortunately I now how another issue of a clicking extruder that just appeared as I was printing the calibration print.
Double check that your nozzle isn't clogged as well.