Original Prusa MK4S
Cartesian 1.75 mm Prusa printer. Open frame by default; enclosure is optional. Supports a wide thermoplastic range with PrusaSlicer profiles.
Manufacturer snapshot
- Brand
- Prusa Research
- Filament diameter
- 1.75 mm
- Build volume
- 250 × 210 × 220 mm
- Max hotend temperature
- 290 °C
- Max build-plate temperature
- 120 °C
- Enclosure
- Open frame (optional enclosure add-on)
- Material system note
- Optional MMU3 for multi-material. MMU path constraints differ from single-extruder printing — verify flexible/abrasive limits before ordering for MMU use.
- Manufacturer listed ideal / supported families
- PLA, PETG, Flex, PVA, and broader Prusa-supported thermoplastics with profiles; ABS/ASA benefit from enclosure
- Manufacturer caution / not recommended
- Do not assume every specialty-filled filament is covered by a stock profile — check PrusaSlicer and material data sheets
Prusa MK4S specs (manufacturer comparison tables) · Recorded 9/14/2026
Printer specifications are not an endorsement of an unverified product or spool. Always re-check the manufacturer page before buying filament for a critical job.
What to verify before you buy filament
- All Original Prusa FFF printers use 1.75 mm filament.
- For ABS/ASA, plan enclosure/filtration rather than relying on open-frame defaults.
- Nextruder/nozzle family must match the nozzle you buy (including E3D Revo if installed).
- Confirm sheet type (smooth/textured) and adhesive needs for PETG/ASA/TPU.
Related on FilamentBridge: PLA · PETG · ASA · TPU · Revo nozzle · How we check compatibility · Shop