Original Prusa MK4S: Specs, Build Volume and Fit Checker
Open-frame Prusa bed-slinger with a 250 x 210 x 220 mm build volume.
Best for: For users who value a documented, repairable open-frame Prusa workflow.
Status: current. Editorial basis: specification research, not a hands-on review.
Material compatibility guidance
These are conservative, evidence-led starting points. They do not promise compatibility with every formulation, filled variant or spool.
- PLA - likely-capable: This is a hardware-based inference, not manufacturer-confirmed material support.
- PETG - likely-capable: This is a hardware-based inference, not manufacturer-confirmed material support.
- ABS - not-recommended: This material usually benefits from a controlled enclosure and this printer is open-frame.
- ASA - not-recommended: This material usually benefits from a controlled enclosure and this printer is open-frame.
- TPU - likely-capable: This is a hardware-based inference, not manufacturer-confirmed material support.
- PA / Nylon - likely-capable: This is a hardware-based inference, not manufacturer-confirmed material support.
- Polycarbonate / PC - not-recommended: This material usually benefits from a controlled enclosure and this printer is open-frame.
- Polypropylene / PP - likely-capable: This is a hardware-based inference, not manufacturer-confirmed material support.
Key specifications
| Build volume | 250 x 210 x 220 mm |
|---|---|
| Enclosure | Open frame |
| Maximum nozzle temperature | 300 C |
| Maximum bed temperature | 100 C |
| Indicative US price | $799 - checked 2026-09-20 |
Indicative prices are not offers. Verify availability, tax, bundle contents and current price with the manufacturer.
Build-volume fit
Use this printer's nominal build volume in the local fit checker. Confirm reduced usable regions and slicer-specific restrictions before printing.
Check an STL or 3MF against Original Prusa MK4SStrengths and limitations
Potential strengths
- Published build-volume information
- Official specification source recorded
Important limitations
- Maximum performance figures are not InspectMesh test results
- Confirm bundle contents and current availability with the manufacturer
Running cost
Job cost depends on material, waste, print time, electricity and failures, not a stated maximum speed.
Open the 3D Print Cost CalculatorRelevant comparisons
Sources and methodology
Last verified: 2026-09-20. InspectMesh summarises attributable specification sources and has not physically tested this unit.