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Prusa Nozzle jams after a whilethumbs down

Posted by ccscotsat 
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ccscotsat
Prusa Nozzle jams after a whilethumbs down
June 09, 2014 03:29PM
I have an all metal hotend Prusa Nozzle, which prints good quality small parts but when I try to start a print which is a lot bigger in dimensions, the extruder jams after 20 minutes.

I have tightened the screws for the idler to the furthest it can go, touching the stepper motor.
I have been troubleshooting this nozzle for 2 weeks now and still can't find why it keeps jamming.

Have read on some forums that this may be due to the nozzle not having a PTFE tube like the J-HEAD hot end?
If so, what can I do to get the nozzle to print a whole 4 hour print without jamming?
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Lippenrother
Re: Prusa Nozzle jams after a whilethumbs down
June 11, 2014 08:43AM
for the MK II you should use a stronger fan as delivered with,
best
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Anonymous User
Re: Prusa Nozzle jams after a whilethumbs down
June 11, 2014 06:27PM
Prusa nozzles are notorious for bad quality at high prices. I would toss it in the trash and use it as a learning experiance.
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ngocquynh85
Re: Prusa Nozzle jams after a whilethumbs down
June 12, 2014 03:30PM
replace new stronger cooling fan
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