ABS bridging/overhang issue with Benchy
After half a year of getting familiar with 3D printing and my Prusa MK2S (just upgraded) I decided to try other materials than PLA. So next should be ABS. After many test prints and calibration-stuff I think I get some good prints. But one thing I'm not able to fix. Just see the pictures. It's really just at the arc of the window/door. All the rest looks fine. Is it a problem with bridging or overhang? Or both? Or just a problem of ABS and it's not possible to print this in ABS?
Settings:
My setup:
· ABS (Verbatim)
· 0,15 mm
· 10% infill
· all other settings stock 0,15 mm Detail slic3er Prusa edition settings
· I'm printing in an enclosure (30°C inside)
· filament is stored in a dry box
What I tried:
Temperatures: 220, 240, 260, 270 – no big difference but 260 best.
Bridges fan speed: 30%, 70% – no difference because no fan was activated while printing (heard this is a slic3r bug?)
Any suggestion? What else I can try?
Thanx in advance for any help!
Re: ABS bridging/overhang issue with Benchy
EDIT: Ok, did more tests and it seems to be more an overhang issue than a bridges problem. Brides are quite fine. But still no solution for those strange "wormy" things. So any suggestions?
Re: ABS bridging/overhang issue with Benchy
It may be a cooling issue. Will it improve, if you print 4 of these objects at once, so you will quadruple the layer print time?
Re: ABS bridging/overhang issue with Benchy
I've had this same issue with the Prusa brand ABS and have tried many things related to nozzle, bed, and enclosure temperature without success. I did notice some improvement when I adjusted the speed settings in slic3r lower, but I'm not sure which single setting helped as I lowered all of them by about a quarter. Another thing I noticed was a different brand of ABS gave me a better but not perfect result. I've only tried the Prusa slic3r version. I may experiment with cura.