My setup since 4 weeks: P1S with AMS, ordered 4 rolls of Bambu ABS filament Yellow, and from eSUN ABS+ Grey, because Bambu did not (still!) have grey available.
Initially I had reasonable results with the yellow for flat parts, but when I started to use the second roll for tubular items, things went unacceptable. I have done many things to get improvements, including twice a complete calibration, and after the second time the calibration results were fine, however, my prints are still un acceptable, and truly defective.: the joints are incomplete, the ends are incomplete and parts of a flat area are missing. To eliminate the possibility of humidity, I have taken another roll out of the vacuum factory bag, and get the same results.
However, the print results with precisely the same settings are perfect, when I print the parts with eSUN Gray ABS+.
The main settings are for both materials: Wall loops:5, speed walls 100mm/s, infill 15%, overhang speed 30, brim 6 mm wide and object gap 0, brim inside and out,
I have come to the conclusion that the filament is defective, at least the 2 rolls I used last, the forth is still sealed.
What is my next step to get this sorted?
I noticed that you didn’t mention that you dried the filament. You might want to dry it at 70c for at least six hours. Thats what i do for every roll i buy. You might consider weighing it first and see how much weight is lost in the drying process.
No, I did not dry the filament, but instead I took a brand new roll out of the vacuum factory packaging. I would expect that a new roll is in perfect condition when it leaves the plant. The RV is 34% inside the AMS and also outside in the room.
What makes you do this, is this essential for factory new material? And the first roll did not give a problem, 4 rolls came at the same time, but there are no batch numbers on the packaging, I noticed. Thanks for your input.
Add’l info: the operating temp’s are 260/90°C
And I did install the Studio update I received yesterday, from 1.8.2.56 to 1.8.4.51 before the prints, shown on the pictures were done.
Cor
No need to dry out of the package, as not only is it vacuum sealed, but also includes desiccant to keep it dry. The reply on drying it is because so many people have used filament open for a while in high humidity areas w/o drying it first.
Haven’t tried the BL ABS, but I can say I also had excellent results with the eSun ABS using the printer settings they provide on their website.
The have been numerous comments about the default settings Bambu supplies for their ABS being incorrect. Haven’t seen Bambu address this in any of the Studio updates. So, for now, I’ll stick with eSun, until BL corrects this issue.
BTW, I also have problems with BL basic PLA warping on large parts, but not with a couple other brands of PLA Pro.
Great printers, but their filaments or settings need work.
As shown above I too have fine results with eSUN; I did use their settings by importing 2 files into the slicer, works fine for me. But I regret buying the Bambu filament.
Would it make sense to issue a ticket for this problem, or any other action to get some movement on this?
New filament is cooled after extrusion to maintain its shape, often by running it through a water bath. Before use, I weigh every new spool and dry it until it stops losing weight. Every new roll of every material so far has lost at least 2 grams of moisture, some have lost as much as 9 grams (9 cc) of water. Two grams of moisture in PLA might not matter, six to nine grams in any material will definitely affect results.
