Hi, Does anyone have detailed settings for their Hemera with PETG that doesn't produce terrible stringing? Looking at Retraction length, Speed, Coasting etc etc Thanks in advance
I run PETG on my Hemera between 230C and 260C, depending on how fast I am printing. I was running 260C printing pieces of face shields, where I was running at 90 mm/s; at that speed, I suspect the filament was never getting all the way up to that temperature. The Hemera takes very little retraction, since it has a very short filament path. 1 mm of retraction is a lot, and 0.5 mm works for a lot of things. Over-retracting causes trouble, since you end up sucking in air, and then the emitted filament comes out with burps of air, making a mess (including stringing, blobs, boogers sticking to everything, etc.). With PETG, it is important to keep it dry, since water also does these same things as it steams off.