Print Issue: Print continues with no filament feed

Snapmaker 2.0
1

Hi, i’m new to the hobby and i’ve beeen having a good runs with pre-made stls until this issue.

Mid print, the nozzle doesn’t extrude filament (jammed) and the printer doesn’t seem to recognize it and continues to travel according to the stl.

The jam i suspect it’s a motor thing because when open the module up, the filament is hard tacked to the motor cog…which i’m having trouble to solve as well.

The bigger problem is that the print continues on without PLA coming out, so i have to stop it throw away what it has printed and restart to see it screw up again…i think i threw away more than 1kg right now.

Any words of advice? Because i don’t think there is a jam indicator unlike the no-filament indicator

2

The printer does not have jam detection so you won’t get a notification. What type of filament? Can you share a pic of what you mean by “hard tacked”?

Also if you are using stock settings, reduce the retraction from 5mm to 1mm and save the change in your profile.

3

Thanks for the reply

Hard tacked meaning the filament being stuck on the motor cog hard. I’ll try to recreate when i go back.
Ohh i’ll try the retraction change.

4

I know what you mean about hard tacked. I had this issue last night and had to replace the entire hot end today. I know what happened, but I don’t know why. About 60% into a 14-hour print, the nozzle temperature setting went to 0C. As the hot end cooled, the extruder kept trying to feed filament, compressing it in the hot end. The filament runout doesn’t trip, so the printer just keeps on going, ruining any chance of saving the print. It happened to me a couple of weeks ago and I found the temperature cutoff in the GCODE, but that’s not the case from last night.

I tried heating the nozzle back up and pushing more filament through to clear it, but it was too compressed. I couldn’t even get the nozzle off without severely damaging the brass. I don’t know why that’s happened to us, but I’ll worry about it every time I start a long print.

5

When you write: “the nozzle temperature setting went to 0C”, what are you describing?

Do you have the logs from the print-job?

Is there GCODE that’s affecting the temperature?

Is there a loose connection with the thermistor?

Something else?

6

Have you attempted a cold pull? There are a few threads discussing clogged extruders causing print failure, here is one:

7

no filament feed
snapmaker pla standard thread
jamming when printing.
replaced the hotend.
enough for one more print.
I don’t even know what to do.

Google Photos