So, since I got my printer I’ve been having problems when I try to print large PLA prints.
All failed prints that I got was due to some issue with the filament flow, mostly the filament get chew and it stops extruding. I attached pictures from 3 different tries.
I’m only using filament that I bought from Lulzbot, on small prints I don’t have any problem (check small prints pictures attached).
I read (i’m not kidding) all treads on the forum regarding the same issue, mostly people comment is that it is caused by “heat creep” or some wrong tension on the idler bolts.
I went through the mhackney guide, printed all calibration models without any problem (posted on the forum)
Things that I already tried:
Changing the tension of the idler bolts, between 4mm and 10mm I tried them all!
Increasing the temperature (tried print with 205, 210,215 and 200 F on PLA)
Decreasing the speed to 50mm/s (everywhere, travel, infill, shell…)
Things that I noticed:
Increasing the temperature makes the print go on for more time before fail.
increasing the tension on the idler bolts only make the filament chew faster.
I leveled my platform with a dial indicator, so I’m pretty sure that is not the issue.
For the Z axis I used a .2mm metal feeler gauge.
I don’t know that else to try.
I can not use ABS because I don’t have an enclosure, and the model that I’trying to print fail on ABS because of it’s size.
car.stl (534 KB)