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You shouldn't need to push the filament by hand. But kudos for sticking it out for 3 years.
If your machine is 3 years old, have you taken apart the hotend assembly at any point? Sometimes buildup occurs between the nozzle and brass tube or peek part and causes excess friction which would cause the constant under extrusions.
I found that after about 1.5 years on my UMO, enough gunk had built up on the interior of my brass tube that I would have to lower my speed to compensate for the extra friction and then as you describe it would fail a few minutes into each print.
I changed out the brass tube, block and nozzle and everything is all good again. (I was lucky to have ordered an extra hot end pack)
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valcrow 145
You shouldn't need to push the filament by hand. But kudos for sticking it out for 3 years.![:p](//content.invisioncic.com/ultimake/emoticons/5a33abe3e5fc3_1f61bcopy.png)
If your machine is 3 years old, have you taken apart the hotend assembly at any point? Sometimes buildup occurs between the nozzle and brass tube or peek part and causes excess friction which would cause the constant under extrusions.
I found that after about 1.5 years on my UMO, enough gunk had built up on the interior of my brass tube that I would have to lower my speed to compensate for the extra friction and then as you describe it would fail a few minutes into each print.
I changed out the brass tube, block and nozzle and everything is all good again. (I was lucky to have ordered an extra hot end pack)
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