Hello All, I am rather New to 3d Printing and I am not sure exactly what my expectations should be. I am using Sunlu Petg for the first time. I don’t know what an appropriate amount of stringing if any should be expected, so I ran the manual calibration tools on Bambu Studio for my P1S then Printed a Benchy. I will try to add photos of my results. Thank you for any information.
That is too much stringing for PETG. However, did you dry the filament? Since the bags filament ships in slow down (but do not stop!) water uptake, new filament is frequently moist. PETG is particularly punishing with increased stringing, warping and curling.
Nope I did not dry my Filament, But I will try that next. Right after I made that post I printed a Temperature Tower, the weird thing I had no stringing at all on the inside. but had a little fuzzing or stringing sticking out the back and front. I was expecting string, didn’t get it where I was expecting. only posting this response to see if anyone has more information about what is going on. Total newbie trying to learn more.
When in doubt turn extrusion rate (flow ratio) to .95 as that will remove the majority of stringing caused by retraction being slightly off. PETG is one that creates wisps all the time though. In case ya need it when the wiper starts to bend and you’re tired of replacing it:
One very good test to further get accurate info is to print a 10mm hollow cube. This tells you about bridging, retraction, elephant foot, speed (corners), top layer surface quality, bottom layer adhesion quality (run your fingernail across the lines, if it goes deep nozzle is far from bed, if it’s fairly uniform and no drag on fingernail it’s good, if elephant foot present too close)… It also saves on filament and takes little time. You can also measure it and see how well the printer is calibrated or if nozzle is too close or belts too loose (10mmx10x10 vs 9.8x9.6x10.1 or such)
Your prints look pretty decent though
Yeah, the temp tower looks pretty good
I’d still recommend drying though before doing anything else. Minimum moisture is the only achievable known state and hence the only state for which calibrations are sensible.
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After drying in a dehumidifier for 4 hours at 140 f, i printed a cube which looked pretty good. Then another benchy that mostly looked like the last one. Not horrible (well not being exactly sure what to expect) but not bad, just some wispy stringers.
What surprised me was how clean the inside of the temp tower was. Oh, and my flow rate is .95.
I currently have two new rolls of sunlu petg is the dehumidifier, and when their done i am going to print a bird house. See how that comes out. I dont believe there are many gaps to cross on that.
Thank you everyone for the advise.