I print my ABS at:
- 240 °C;
- with a bedtemp of 80 °C;
- 5 % rectilinear infill;
- 0.25 mm layer height;
- 2 solid layers top and bottom;
- Fan is completely disabled;
- 0.25 mm extrusion width;
- 50 mm/s perimeter print speed;
- 60 mm/s infill speed;
- 20 mm/s top solid and solid speed;
- No acceleration.
When printing ABS, I place an aluminum foil lined cardboard box over my printer to help keep the ambient temps up for less warping and stronger prints. I've never actually measured the temperature inside, but the cardboard box insulates very well.
I get this weird kind of tearing in my prints, I'm not sure if it's from too large of gaps in my infill, too fast print speeds, or not enough top layers.
Another guess is some kind of drooping because of the high ambient temps.
The tearing only occurs on large top layer surfaces.