Thank you for your answer Nicolinux,
the supportspeed is 20mm/s. I think that is slow enough. ?
Thank you for your answer Nicolinux,
the supportspeed is 20mm/s. I think that is slow enough. ?
Ok, then it must be something else. Looking at the brim for the object, I can see that it is very spotty. The brim should have a tight surface so it could be a sign for underextrusion. I wonder how the main object print quality is like. Do you see signs of underextrusion there too?
I printed with raft. The mainobject looks pretty good except for the burnt crumbles dragged in from the support.
In the first layers there is no brittling at all. It starts somewhere at a hight of 5mm or something.
From there on it is getting more and more.
Material flow is at 108%
retract length 6.5mm
retract speed 30mm/s
Then I am out if ideas - sorry. I don't print with ABS but maybe @Anders Olsson knows something.
It is a bit difficult to determine what went wrong.
- Burnt ABS generally means that you could/should lower the printing temperature a bit, what brand material did you use?
- ABS generally don't like cooling fans, on a model like that you should definitely leave the fans completely off (or issues with brittleness and warping will increase)
- What slicing software did you use? My experience is that the sudden speed changes and excessive travel moves of some of the more recent versions of Cura made things much worse, compared to the good old 15.04.06 version.
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Nicolinux 288
Hi,
if you use Cura, check the print speed at which it prints the support. I assume it prints way too fast and filament strands are dragged around and clump together.
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