3D Benchy - ABS issues
Hi,
I'm new to 3d printing and finished my Prusa I3 MK2S build last week.
I've made various prints in PLA and PETG and they turn out great!
ABS however is giving me a headache, I simply cannot print the 3D Benchy.
Current print settings:
- Prusa black ABS-T
- Standard slic3r prusa ABS settings @ 0.15mm = 255°C@hotend and 100°C@bed with fan disabled
The problem:
The printed ABS looks somewhat smudged/blobbed, the extruder nozzle digs into the printed part after layer X, NOT because of lifting from the printbed (the first layer seems to stick fine), but because of expansion? The printed part remains "soft" during the print (I can see the nozzle warping the lower parts of the print when passing by, over the problem area). As you can see, at a certion layer, the sharp corners start lifting up (see the attachments).
What I've tried so far:
- placing the printer in an enclosure: in my case, a carboard box
- lowering the hotend temperature: 235°C was the lowest setting I tried
- lowering/raising the bed temperature: I tried 85°C all the way up to 110°C
- reducing print speed
- reducing extrusion
- enabling part fan: the print comes out great! But the layer are not bound, the printed part is super brittle...
Since I'm new to 3D printing, I'm running out of options that I can think of... Any suggestions would be great!
Re: 3D Benchy - ABS issues
Have you tried printing in an enclosure with the part fan slowly enabled and printing slowly at the same time? The ambient temperature needs to be pretty hot. ABS generally does not do well for large overhangs or details. I use a silicone sock on my nozzle and this helps the heat from the nozzle from melting the part under it.