Gaps in print lines. Help!
I assembled a Prusa Mini kit and it was printing well for months and then suddenly it stopped printing filament. I took it apart and got it printing again, but now when I try to print it includes these gaps. I've tried adjusting the axis (see the test image above) but it hasn't helped. Please help!
RE: Gaps in print lines. Help!
Let's assume there's nothing wrong with the extruder and the hotend, and the axes are square. First thing I would do is clean the steel sheet with dish washing soap and lots of very hot water. I assume you also use 90+% isopropyl alcohol to clean the sheet between prints.
Next, run a first layer calibration. The one that's built in is "okay" but I would suggest you use something like
https://www.printables.com/prints/105404
that's easier to interpret and allows you to test 8 settings in one print.
Hopefully that takes care of the issue.
Other possible reasons:
* Partially clogged nozzle (->cold pull)
* Worn down small PTFE tube in hotend (unlikely after only a few months of use)
* Incorrect extruder settings (unlikely, given the sporadic nature of the gaps)
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/