Any tips/tricks/settings for PETG? I keep getting blobbing and little zits.

Any tips/tricks/settings for PETG? I keep getting blobbing and little zits. I know I need to fiddle with the retract and maybe wipe coast. Does anyone have suggestions?

I am using Walter’s carriage with no blower fan, and E3d V6.

I am running mmemetea’s Saint Flint Extruder with an MK7 drive. https://www.youmagine.com/designs/saintflint-extruder This thing rocks and seems to be quite capable of driving filament without grinding.

I think you need to under extrude a little with PETG. I think I under extruded at 0.9.

It oozes. Fast and long retraction helps.

Second the under extrusion. For me, slow retraction (like 15-20 mm/s) with eSUN PETG gave significant improvements in print quality. Saint Flint Extruder FTW!