TAZ5 underextruding by half

A forum dedicated to the stock LulzBot TAZ 3D Printer
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eussrh
Posts: 41
Joined: Fri Jul 31, 2015 5:35 am

TAZ5 underextruding by half

Post by eussrh » Tue Feb 12, 2019 11:54 pm

My TAZ suddenly started underextruding. No hardware or software changes. I measured the extrusion rate and it is half what it should be. All other axis are ok. I changed esteps/mm to 1666 (twice what it was previously) and it works correctly now. So it sounds like it mysteriously decided to go to 1/16 steps instead of 1/8 steps. Does anybody know why that would happen? I thought the rate was hardwired into the Rambo board.

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piercet
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Location: Battleground, WA
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Re: TAZ5 underextruding by half

Post by piercet » Wed Feb 13, 2019 10:32 am

Check your wiring harness to see if one of your pins is loose.

kcchen_00
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Re: TAZ5 underextruding by half

Post by kcchen_00 » Wed Feb 13, 2019 12:28 pm

Filament change?

eussrh
Posts: 41
Joined: Fri Jul 31, 2015 5:35 am

Re: TAZ5 underextruding by half

Post by eussrh » Wed Feb 13, 2019 10:28 pm

I tested again and once it extruded 65% of the requested distance and another time it extruded 55% of the required distance. I will check for loose wiring although not sure how since it is intermittent apparently. I tried an alternate extruder head with similar results so it is not the extruder head itself.

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