Today my U1 ruined another print, wasting $7/8 in filament. The #1 spool reached the end and was stuck, but the U1 kept printing air for 12+mm before detecting spaghetti.
Why did the U1 detect that the filament was stuck? This kind of thing happens all the time at an end of a roll so I would expect SnapMaker to have better detection of this common failure mode.
Also why is there no method to submit a help ticket on the website so we can have legit tracking that our issues are heard and being worked on?
Was the end of the filament stuck to the spool (unable to feed), or did it come loose and run out? I’ve had both happen depending on the brand of filament, and they’re different detection methods. Not that my Original can detect either…
Other users report that they receive an error message when the filament gets stuck and can then perform a restart. Mine has never shown an error message on various print heads and just continued printing hot air—so recovery is impossible.
Mine have paused a print at a filament runout detection (Snapmaker filament - not stuck, just runs out) - I loaded a fresh roll of filament and continued the print without issues.
You might just need to put a bit more tension on the extruder drive gears. I’m guessing that your filament gets stuck (at the end of the reel) and then your extruder gears start slipping. If that’s the case then the printer won’t detect a filament issue (becuase it still has filament and the extruder stepper motor is still stepping). If you had a bit more tension on the drive gears I’d hope that the extruder motor would stall and the TMC driver should detect the missing steps.
I can’t find a happy medium here and now it’s making me want to skip doing multicolour with it. I’ve had two misprints this week due to the feeders and air printing. I had to shut off air printing because it was detecting there was an issue when there wasn’t which then causes inevitably a layer shift, why it can’t account for that I have no clue. But when you have it off so it does do that and there is an air printing situation because of I don’t know, the lightest bit of drag on a spool when the filament is near the edge of the spool for instance, and the whole print just effs up. I lost a 32 hour print at the 24 hour mark when saw that it just sort of decided to stop printing from the one spool even though it was properly loaded, not jammed nor tangled.
I would seriously pay for stronger feeders if they made them.
