There haven't been any firmware bugs like that in the last 3 years so it's not that. Your 2 issues are probably unrelated. The issue about filament not coming out of the nozzle suddenly 19 hours into a 20 hour print - well that's common and can have many causes e.g. grinding due to too many retractions, brittle filament cracking in the bowden and then getting stuck in the head, feeder motor getting to hot and causing filament to get soft and grind flat, filament tangles, and a few others.
The other issue - where the Z stage does "jerky motions" - I don't know what that is. I'm thinking the servo controller for the Z motor is getting to hot. This has been a recent problem especially people living in warmer climates without air conditioning. Several people fixed it by lowering their Z current (not x,y, or E) to 1000ma. You can do this from the front panel on the latest firmware - I think the latest release is in cura 15.04.
Or it could be bearing issues. With power off move the bed up and down repeatedly feeling for stuck spots. going down is easy - to lift the bed use both hands near the back of the bed and lift hard enough to lift the printer off the table.
Hi,
You made some solid points that make sense in my case, I do live in India and it's quite toasty here although I did have my AC on while printing.
Your point about lowering the Current could be the answer as I had fixed "Shifted Layers" issue by dialing down to 1200mA from 1300mA.
I'll try lowering Z Current as you mentioned and give it a shot.
As I said there was no grinding or a clogged nozzle, I could feel at the back of the feeder that the motor wasn't moving at all, it wasn't clicking it was just stationary. Almost as if the Z error switched it off but...while paused, I changed my material, my material oozed with no issues as soon as I hit start, it would stop the feeder motion and nothing would feed, I hope I'm doing a decent enough job to explain you the situation if not, the next time it happens I'll film it.
Thanks, will let you know how the current change helps!
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gr5 2,295
There haven't been any firmware bugs like that in the last 3 years so it's not that. Your 2 issues are probably unrelated. The issue about filament not coming out of the nozzle suddenly 19 hours into a 20 hour print - well that's common and can have many causes e.g. grinding due to too many retractions, brittle filament cracking in the bowden and then getting stuck in the head, feeder motor getting to hot and causing filament to get soft and grind flat, filament tangles, and a few others.
The other issue - where the Z stage does "jerky motions" - I don't know what that is. I'm thinking the servo controller for the Z motor is getting to hot. This has been a recent problem especially people living in warmer climates without air conditioning. Several people fixed it by lowering their Z current (not x,y, or E) to 1000ma. You can do this from the front panel on the latest firmware - I think the latest release is in cura 15.04.
Or it could be bearing issues. With power off move the bed up and down repeatedly feeling for stuck spots. going down is easy - to lift the bed use both hands near the back of the bed and lift hard enough to lift the printer off the table.
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