ABS on the Prusa MK4S
Yes, but it takes extra gear or care. The MK4 with a high-flow brass nozzle. Same open frame, faster prints.
ABS is tricky on the Prusa MK4S
No enclosure on this printerPrinter
The Prusa MK4S is open to the room, and ABS warps and cracks in open air. Small parts can survive; for anything bigger, add an enclosure (even a grow tent or a box over the printer helps).
Fumes: give it fresh airMaterial
ABS gives off unpleasant fumes while printing. Run it in a ventilated room you are not sitting in, or vent the printer outside.
Buying the CF version of ABS?
Carbon-fiber filament sands down the Prusa MK4S’s stock nozzle. Plain ABS is fine; for the CF variant, fit a hardened steel nozzle first (a cheap swap).
Safe starting ranges for ABS as a family, not gospel. Each spool below has its exact manufacturer numbers, the dated source, and one-click slicer settings on its page.
More ABS spools
154 ABS filaments in the catalog, popular brands first. See the full ABS list.