I purchased some natural PETG from micro center, I loaded it up after cleaning my extruder. The label says 230-250 c but right away I had a problem. Anything over roughly 215 c and it boils out of the nozzle, If I start, a print it doesn’t go well. At 215c layer adhesion is awful. Much higher and I get a mix of over and under extrusion with lots of popping.
The rest of my setting are
- 30mm/s
- 65c bed temp
- .2 layer height
- .4 nozzle
- .8 wall thickness
- 0% infill
MB3D
2
“boiling” or “popping” filament in the nozzle is usually an indicator that your filament absorbs water which evaporates inside the nozzle. This however isn’t usual for PETG! Try drying the material anyways by baking it at 60-80c (better start with 60 and increase temp depending on your results). A few hours in the oven should do the job. I would definitely talk to the filament manufacturer.
2 Likes
I will try baking it, I pulled it straight out of the vacuum sealed bag with desicant. I may try to return it, there’s a local guy who purchases filament from the same place and I know he has had success with petg from the same source but in different colors.
You where correct, I put a sample in the oven last night and forgot about it until this morning. I loaded it in the extruder and started a print at 245c and got a excellent print with no boiling/popping! Layer adhesion was pretty great but it looks like I need to make some changes to retract settings.
More Petg with similar results, I’m abandoning this brand.
