After a year of good pints one bad clog Fubar-ed me Help please.
Help if you can. I own a Prusa i3 MK3 It's been working splendidly for almost a year. Then disaster. It clogged and I mean really clogged. I had to replace the nylon insert tube because the one I had was stuck solid. Took the printer apart carefully and put it back together the same. When I started it back up it tried to calibrate and kept failing at step 2. No answers to be found. I tried printing and you can see it's not printing as nice and blobs are forming causing fails all with the same filament. Just as I was trying to finish a job. Any help or insight is appreciated. The one on the left is the one post nozzle clear . Same filament same exact print settings.
RE: After a year of good pints one bad clog Fubar-ed me Help please.
When I started it back up it tried to calibrate and kept failing at step 2.
Step 2 of what?
Most common cause of a failure after working on the hot end is not following the E3D-V6 assembly instructions. There are tricks that must be followed to the letter or you get messy prints and blobs falling off the heater block.
Did you use thermal grease on the heat break?
Did you preheat to 285c before unscrewing the nozzle?
Did you adequately set the nozzle depth before installing the heat break?
Did you preheat to 285c before torquing the nozzle to the heat break?
RE: After a year of good pints one bad clog Fubar-ed me Help please.
ps: That stuttering sounds like a belt hopping or drive gear slipping on the shaft, a smaller chance of a seized bearing (add a few drops of oil on the rods both sides of the bearings and work the axes back and forth to get the oil inside the grease seals), or a broken wire in the extruder cable bundle). Life of the wires in the printer is limited. No one has ever said how many hours of use, but they do fail in time. Try wiggling the cable harness as you are running the tests and see if you can force the stuttering.
RE: After a year of good pints one bad clog Fubar-ed me Help please.
RE step to- second point in calibration process descrivbed below
If you read the error message in the calibration process on the Pruse screen you will notice it says proceeding to "Searching calibration point 2 of 4" .... then "XYZ Calibration failed. Bed calibration point not found" - from observing the stepping motor and the belt and checking tension, the noise is from the stepping motor going to far because the calibration point 2 was not found, the point of failure.
Yes preheating screw before remove and install
On heat break install. I was under the impression you set the heat break screw into the heat block then installed the heat block putting the nozzle on after the heat break was on the printer and pre heated to proper temperature.
I felt there was enough grease in the heat break put I will try adding some.
How do I tell if I "adequately set the nozzle depth ". I took a picture and matched it visually, is there a depth I can measure in micrometers. what is considered adequate??
Instructions I followed are below.
https://wiki.e3d-online.com/E3D-v6_Assembly
Does that help clarify. I was told to do a factory reset and reinstall the firmware, does that make sense.??
RE: After a year of good pints one bad clog Fubar-ed me Help please.
Last nights print 
RE: After a year of good pints one bad clog Fubar-ed me Help please.
Posting in the wrong forum. Your post may get better attention if posted here :
https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/
Texy
RE: After a year of good pints one bad clog Fubar-ed me Help please.
@martin-f28
On the video I see that the nozzle is scratching on the paper which is wrong.
The nozzle must not touch the paper during calibration.
Lower Pinda 0.5 mm by loosening Pinda and rotating it clockwise half a turn.
If the nozzle is still scratching the paper, lower Pinda a little further.
Bear MK3 with Bondtech extruder
RE: After a year of good pints one bad clog Fubar-ed me Help please.
the noise is from the stepping motor going to far
The extruder jamming isn't anywhere near normal limits, so that is NOT what is happening. Perhaps as RDH says, it is instead binding on the bed. Hard to tell with the paper, but certainly possible. If that is the case, adjusting the PINDA down a bit might help.
RE: After a year of good pints one bad clog Fubar-ed me Help please.
Posting in the wrong forum. Your post may get better attention if posted here :
https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/
Texy
Now moved by the MOD team 😀
RE: After a year of good pints one bad clog Fubar-ed me Help please.
Now moved by the MOD team 😀
In the future they shall be referred to as the "Mod Squad".
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan