I am having a real hard time printing Polymaker PETG Polylite. The roll is several years old but I tried it at 65C for 12h.
The filament does not stick to the plate or to itself. This happens on both the stock Bambu textured plate and with a Darkmoon Satin plate.
The bed is set to 80C, the nozzle is 240C, the first layer speeds are 20 wall, 30 infill. After the first layer, I have the speed go up to 100mm/s.
I would appreciate any advice.
Raise nozzle temp to 255 first layer, then 265 subsequent, and lower the bed temp to 75C. Turn fan completely off the first 5 layers and see if that helps.
80C bed for PETG is kind of excessive. You can, it’ll work, but in my experience it somewhat hurts the 1st layer quality, 70C will do just fine for an enclosed, chamber temp regulated printer.
With the right settings the 1st layer can absolutely be printed at faster (default) 40/70 or 50/105 speeds.
With a bed temp of 75C on the textured plate, it’s sticking. I can trying with lower temp and higher speed to check how it does.
As for those strings/line, the increased nozzle temp seems to be doing the trick.
Very obvious question maybe, but have you dried your filament?
Polymaker prints nozzle and bed temps on their spool.
Why was the 80C bed temp chosen?
EDIT You might want to mark the thread as solved to help others who come here later.
Yes, dried at 65C for 12hrs.
Yes, they do print the temps on the spools. However, their temps don’t work for me. I played around with them and it only started working with 265C.
As for the 80C bed, it was suggested on the Darkmoon discord when I was having issues with it sticking to their Satin plate.
I still have to retest on their plate with the new temps.
