Solved Z axis skipping

Mid print the z axis started lifting up half an inch above the 3d object being printed extruding filament. Erratic type behavior. Any ideas, thanks

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Check and make sure the fan on the RAMPS is working. If not the board will overheat and do crazy things like skips steps and such.

 

Turns out it was the filament stuck on the spool and the extruder was not able to feed the filament through. It caused it to lift up off of the 3d object. Thanks for the info. I printed some feet for the printer to create better airflow, just in case.

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Yeah it is a new spool of pls and it got caught. I was 6 hrs into a print and it messed up.

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I know, I was printing a robotic arm that was aproaching 32 hrs and I bumped the usb from laptop to robo 3d and it lost connection. I was devastated.

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Good point - I forgot to connect the fan last time I had the case off and was getting random skips - after an hour or two researching I think this is the issue (trying a print now). I couldn't find any lose belts etc.

 

Let me know how it goes. I was to lazy to check for like 3 weeks. I had issues like that. Could not figure it out. I assummed I plugged the fan in the correct way and it was working. I was wrong. Once I actually checked it I plugged it in backwards and it wasn't working. Once that was fixed my problem was solved.

 

Turns out that was my issue - I just finished a print that I tried so many times today, but kept failing.

We'll have to keep that in mind for the future

 

I know this thread is old, but it just saved my bacon. Been in a rush to get a prototype out and the printer started failing. Thanks guys!