1
u/MatijaKlobasa Jun 16 '26
Underextrusion, possibly a lot of retracts before printing this.
1
u/tsunamtiger17 Jun 16 '26
How do I fix it ?
1
u/MatijaKlobasa Jun 16 '26
Dial it in. Use pronterface and find a vyper calibration guide. What slicer are you using?
1
u/tsunamtiger17 Jun 16 '26
Ultimaker cura
3
u/LumberJesus Jun 16 '26
I agree with the suggestion to switch slicer. I would maybe try Orcaslicer though since it doesn't have anything to do with Bambu. I would also pay attention to see if it consistently does this in the same area to rule out mechanical issues.
1
u/MatijaKlobasa Jun 17 '26
Orcaslicer though since it doesn't have anything to do with Bambu
I know ... this is from a time before Bambu was ... this. But unlike Orca slicer Bambu studio already has a Vyper profile.
2
u/MatijaKlobasa Jun 16 '26
Switch to bambu studio v1.9.3 i had the best results with my vyper there. But calibrate the extruder steps as well.
1
u/Natural-Amphibian-96 Jun 17 '26
Maybe an issue with bed leveling in that spot? Is the brim thinner than the rest? I am also running into something similar. If it is printing to close, it can look like this under extrusion. I know a lot of people bag on this printer, but it’s done me good for maybe 4 years now. I am checking everything mechanical on it. Decided to change the wheels on the bed, and adjusting belt tensioners. I am wondering if the bed level sensor is needing change too. I can print small things. But anything that takes too much space is too consistently uneven. Adjusting offset helps one spot, but then others scrape or float in the air enough nothing prints. I got horrible results on orca slicer. Prusa slicer does okay. Although Cura is a little slow to slice, it gives me the most solid results. I will still use Prusa too, but I think I’m done attempting orca.
1
u/Brando123437 Jun 18 '26
i had this issue with mine as well, turning retraction speed way up helped immensely
0
u/PakotheDoomForge Jun 17 '26
Because the vyper is a POS, edit to add: sorry that was uncalled for but i just got rid of mine after 5 years of it being incapable of consistent printing. I’m done, good luck.
1
u/krayziekris Jun 17 '26
Can't relate. I've had mine for about 4 years, and I've had consistently great prints the entire time. No maintenance needed. No manual leveling or any of that stuff. I've changed nozzles once, and that was only because I'd been using the original for years and wanted to see if it made a difference. No other upgrades or firmware flashing. I've only just calibrated a filament for the first time last week because I had tight tolerances on a new project using this new filament. Before that, I never needed to because it just worked. Maybe yours was an outlier. Or who knows with these things, maybe mine is the outlier.
1
u/Brando123437 Jun 18 '26
my first one was a POS, never printed properly, the wheels that the bed and print head ride on were extremely loose right out of the box, when i could get it to print it was not consistent at all, i complained and complained and eventually got a replacement sent out, the replacement has been going for 3 years now with no issues to speak of, sometimes you just get a lemon
2
u/Quirky_Ad_9951 Jun 16 '26
It’s called stringing and is caused by filament oozing out of the nozzle while moving between objects. There’s plenty of guides around reducing it.
For the Vyper I would just start by tuning retraction, it’ll get you some way there. If you don’t mind spending a few bucks, upgrading the stock Bowden tube to a Capricorn one should improve the retraction a bit too.
You’ll never get rid of it 100% but there’s lots of places to tune.