White Polymaker Polylite PETG printing poorly. Any experience/advice with this filament?

[mdewayne7]

Continuing the discussion from Arc fitting disabled in orca, but receiving unknown command G3/G17 errors:

@mdewayne7

The filament is a Polymaker Polylite PETG, white.

I’ve got the temp(s) above what is recommended by the manufacturer, at 260/90 first layer, and 255/90 other, those are the best results I’ve seen so far while printing a 15mm X 5mm disc. Going super slow on first layer(was at 10mm/s, now going down to 5mm/s).

I’m struggling to get the first layer to stick to the bed(PEI Textured) and not gunk up the nozzle.

After reading the community guidelines, I realized I was diverting my own topic. But I could use some help/advice with this filament.

I’m currently printing orca’s flowrate calibration, and it is going ridiculously slow to get a first layer to stick/not gunk up the nozzle.

At work, we use this filament, a black PETG from Creality, and an ESD PETG from 3DXTech.

From what I understand, on our first Troodon 2 at work, they used only one profile/setting for all three filaments. After switching from calibrating the creality petg yesterday to the Polymaker polylite today, I don’t see how that is or was possible. Most every attempt I made this morning had the nozzle gunked up after a few passes on the first layer.

Unfortunately I cannot access that profile as the other guy at work was using Simplify3d and I do not have any of the login info for that computer/profile. He’s out from work for a week or so.

As a side note, that printer/profile was set up externally before the boss at work decided we wanted to start handling our own 3d printing and design.

Does anyone have experience with this filament? Does it make sense that it seems I have to be 20° hotter than manufacturer recommend on both nozzle and bed temp?

I’m trying to wrap my head around as much as I can before I move on to the expensive ESD filament…

Thanks in advance

[Sineos]

PETG is quite sensitive to the z-offset and how much you “squish” the filament on the bed. It requires a lot less than PLA and takes it quite badly if the squish is too high.