Will it print?
What to feed the Prusa MK4S
Same menu as the MK4, more headroom
PLA, PETG, TPU, ABS, and ASA, with the nozzle ceiling raised to 300 °C over the same 120 °C bed. Nothing on the menu changes; the margins widen.
Where the headroom helps
High-speed spools often ask for the top of a family's range. ELEGOO's Rapid PETG, for instance, runs to 270 °C, a number the MK4S reaches without strain.
First spool
Prusament PLA, for the same reasons as on the MK4: per-spool QC data on the label and tolerance you can trust on long prints.
What to feed the Prusa MK4S
Same menu as the MK4, more headroom
PLA, PETG, TPU, ABS, and ASA, with the nozzle ceiling raised to 300 °C over the same 120 °C bed. Nothing on the menu changes; the margins widen.
Where the headroom helps
High-speed spools often ask for the top of a family's range. ELEGOO's Rapid PETG, for instance, runs to 270 °C, a number the MK4S reaches without strain.
First spool
Prusament PLA, for the same reasons as on the MK4: per-spool QC data on the label and tolerance you can trust on long prints.
Top picks for the Prusa MK4S
Editor-tested filaments and Prusa's own spools: start here.
Tightest diameter tolerance in its class (±0.02 mm) and the default on the Prusa MK4. It's the benchmark everything else is measured against.
Tuned for Bambu A1/P1S/X1C out of the box. No dial-in needed when using AMS with the built-in profiles.
Creality's own high-speed PLA, the default spool for K1 and Ender-3 V3 owners.
The budget Amazon staple of the Ender/Neptune era: consistent, cheap, and everywhere.
The classic budget PLA+: tougher than plain PLA, semi-matte finish, and a decade of community trust.
US hobbyist staple: widely available on Amazon Prime, consistent quality, and sold in a huge color range.
The Micro Center house brand. If there's a store near you, it's the cheapest reliable PLA+ you can walk out with today.
Great per-kg value with consistent results. A popular starting point when you want to print a lot without spending much.
All compatible filaments
1,632 filaments work with this printer, popular brands first, showing 50. Full lists: PLA, PETG, TPU, ABS, ASA