ABS prints at about 250 °C with a 100 °C bed and 0% part cooling. Usable range 235–265 °C nozzle, 90–115 °C bed. Needs an enclosure.
Acrylonitrile Butadiene Styrene
Starting settings
Nozzle
235–265 °C (start 250)
Bed
90–115 °C (start 100)
Part fan
0–25% (start 0%)
Wall speed
30–50 mm/s
Max volumetric flow
10 mm³/s
Shrinkage
0.8%
Softens at
105 °C
Enclosure
Required
Nozzle size
0.4 mm or larger — 0.4 mm recommended
Nozzle material
Brass is fine
Drying
70 °C for 4 h
Speed
Similar to PLA, 30–50 mm/s. Speed is not your constraint on this material — chamber temperature is. Slowing down does not fix warping; an enclosure does.
Bed surface
Smooth PEI at 100 °C, or glass with an ABS/acetone slurry. Wants a genuinely hot plate.
What bites people
Warping and mid-print layer splitting are enclosure problems, not settings problems. An open-frame printer cannot reliably run ABS on tall parts.
Fan is close to the enemy here. Cooling causes the layer separation people try to fix with more heat.
Shrinks around 0.8%, so parts come out undersized. Compensate in CAD or with slicer scaling for anything that has to fit something.
Safety
Releases styrene and ultrafine particles while printing. Ventilate to outside air or filter properly — do not run it in an occupied room.