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Any tips for stopping the extruder/nozzle from jamming?

Posted: Wed Aug 11, 2021 12:25 am
by Blue_Collar
Fellow printers,
Seems most times I try to print another test on the A20T, at least one of the three extruder paths is plugged. Any ways to avoid this?

Re: Any tips for stopping the extruder/nozzle from jamming?

Posted: Wed Aug 11, 2021 12:40 pm
by BreeOge
I have only had one jam, and that was due to retracting too far. Other than that I have not had any, if I haven't used a color in awhile i will heat it up to 240 or so, and manually push filament out by the display.

Re: Any tips for stopping the extruder/nozzle from jamming?

Posted: Mon Aug 23, 2021 7:01 am
by Axxezzor
Pull out all the bowden tubes from the hotend. Just the tubes not the fittings. Make sure all the fittings are tight.
Then with the bowden tubes free extrude filament until there are a few inches of filament is poking out the end of each bowden tube. Make sure the filament is moving freely. Use some snips and cut each filament flush with the end of the bowden tube. Then if the hotend is nice and clean push each bowden tube in as far as it can go.

Doing this has worked wonders for me. If the bowden tube is not fully inserted hot filament squeezes into the gap where the tube should be and causes a plug...

Re: Any tips for stopping the extruder/nozzle from jamming?

Posted: Sat Oct 16, 2021 6:59 am
by Blue_Collar
THANK YOU! I had given up on the A20T, but I'd like to try getting it working again. I'll try your suggestions.