Extruder nozzle stuck in screw hole during Wizard calibration
My first calibration with the Prusa MK3 using the Wizard the extruder nozzle became stuck in the front screw hole. It was very careful with the build and the 9. Preflight Check ... so this is strange. Has anyone else had this problem, or has suggestions?
I'm running firmware 3.1.3. Also, when I move the plate forward and backward, and extruder left-right, it seems the nozzle remains at the perfect height, so unsure what happened in the Wizard.
Re: Extruder nozzle stuck in screw hole during Wizard calibration
your probe is too high up most likely. I cant tell form the pictures. Did you perform the un powered step of lowering the nozzle to the print bed and setting the gap on the Pinda to the width of a zip tie?
Re: Extruder nozzle stuck in screw hole during Wizard calibration
Yes, during 9. Preflight check, I adjusted the nozzle to the bed height, and the PINDA probe down to the height of the zip-tie. Doubled checked it now, and it is at the proper height where I can get a zip-tie under it with a little friction. I lowered the PINDA probe slightly to make sure it was exactly a zip tie, re-ran the wizard, and the Extruder goes right into that screw hole 🙁
Re: Extruder nozzle stuck in screw hole during Wizard calibration
Nope you perform xyz calibration and then it raises the head and instructs you to put the steel plate back on and then it heats the head and you load the filament.
Can you take a picture pointing straight at the part cooling fan. make sure it shows the nozzle and the bottom of the pinda probe head on and in relation to the heat bed
Re: Extruder nozzle stuck in screw hole during Wizard calibration
Sean - thanks for the help. Here is the photo you requested ... let me know if you need a different angle.
Re: Extruder nozzle stuck in screw hole during Wizard calibration
If you raise your extruder head, does the red light on the Pinda probe come on? If so, put a piece of metal under it and see that it goes off. Easy way to check Pinda function.
Re: Extruder nozzle stuck in screw hole during Wizard calibration
Yes, I tested the PINDA probe and I can get the red light to come on and off by placing a flat screw driver underneath. Specifically, I used the calibration "show end stops" and could get the Z reading to change form 0 to 1. So the probe looks good.
Re: Extruder nozzle stuck in screw hole during Wizard calibration
It looks like I was able to solve this by lowering the PINDA sensor. A cable tie is 1.2mm . What I did was uses 10 sheets of paper at 0.65mm, and that brought the probe low enough.
Re: Extruder nozzle stuck in screw hole during Wizard calibration
Cool! Good luck!