PETG retraction settings
Hey there,
for some reason I can't figure out the right retraction settings for PETG, sadly. Stringing is no problem for PLA prints, but for PETG I just can't get it completely right. I'll try to add some pictures...
That was printed with 230°C and 0.8mm retraction at 25 mm/s since that works at least a little better than the default PETG profile. Extrusion multiplier is calibrated for the filament and the print itself is super accurate, beside the stringing problems. I could live with the spiderwebs, but at some spots they build up into those little branches that are hard to clean up.
What's most odd is that a retraction test ( http://retractioncalibration.com/) shows no combination of retraction length and speed that would be usable. All the way from 0.5 to 2.0mm and retraction speed from 15-60 mm/s. Tried this with 3 different rolls of PETG.
For reference, here is a test sample of PLA:
Printer is an MK3S+. Any help would be appreciated, since this is driving me nuts 🙂
Best,
Daniel
RE: PETG retraction settings
As concern the stringing, it's a PETG thing, you have to live with that.
About the other issue, i'm not sure what can be the cause. It's maybe model-related? You can try to use the function "avoid crossing perimeters"
I'm not an expert. Ma parlo anche italiano 😉
RE: PETG retraction settings
I find moving the nozzle temp around has the largest effect on stringing and spider webbing. Some plastics though, there is just no hope of eliminating it. For those I have this:
RE: PETG retraction settings
Yup. I print mostly PETG, and the heat gun has become my best friend.