Exact product identity
Product identifiers in official records
GTINs, UPCs, manufacturer SKUs and model codes can identify different colors, configurations or bundles. Only identifiers stated in official records are shown; an unpublished ASIN is not inferred.
| Identifier | Exact value | Variant or bundle | Market | Source and review |
|---|---|---|---|---|
| Manufacturer product name | MK4S | Assembled or kit | United States | Prusa Research · prusa3d.comOfficial U.S.-configured product title and specifications · |
Verifiable specifications
Product information supported by official records
| Build volume | 250 × 210 × 220 mm | View source |
|---|---|---|
| Maximum nozzle temperature | 290 °C | View source |
| Maximum heatbed temperature | 120 °C | View source |
| Included nozzle | High-flow Prusa brass CHT nozzle, 0.4 mm | View source |
| Supported materials | PLA · PETG · Flex · PVA · PC · PP · CPE · PVB | View source |
| Materials conditioned on enclosure with filtration | ABS · ASA · HIPS · PA | View source |
| Automatic first-layer calibration | Yes | View source |
| MMU3 nozzle guidance | MMU3 works with the high-flow nozzle, but Prusa documents the standard nozzle as the lower-waste choice with the same speed. | View source |
| First-layer diagnostic checklist | Prepare the correct print sheet surface for the material · Check expansion-joint orientation · When instructed, cool and power off before checking nozzle seating · Run the LoadCell test from the printer menu | View source |
| App | PrusaSlicer | Limited to cited market scope |
Product capabilities
Core capabilities and what they mean
Figures and features are manufacturer-published information, not independent test results.
Build volume
250 × 210 × 220 mm
Prusa lists 250 × 210 × 220 mm. The official table also lists a 0.4 mm high-flow brass CHT nozzle, 290 °C maximum nozzle temperature and 120 °C maximum heatbed temperature.
See the original record ↓Maximum nozzle temperature
290 °C
Prusa lists 250 × 210 × 220 mm. The official table also lists a 0.4 mm high-flow brass CHT nozzle, 290 °C maximum nozzle temperature and 120 °C maximum heatbed temperature.
See the original record ↓Maximum heatbed temperature
120 °C
Prusa lists 250 × 210 × 220 mm. The official table also lists a 0.4 mm high-flow brass CHT nozzle, 290 °C maximum nozzle temperature and 120 °C maximum heatbed temperature.
See the original record ↓Included nozzle
High-flow Prusa brass CHT nozzle, 0.4 mm
Prusa lists 250 × 210 × 220 mm. The official table also lists a 0.4 mm high-flow brass CHT nozzle, 290 °C maximum nozzle temperature and 120 °C maximum heatbed temperature.
See the original record ↓Supported materials
PLA · PETG · Flex · PVA · PC · PP · CPE · PVB
See the original record ↓Materials conditioned on enclosure with filtration
ABS · ASA · HIPS · PA
See the original record ↓Automatic first-layer calibration
Yes
The product page says first-layer calibration is fully automatic through the Loadcell sensor. If the first layer is still uneven or does not adhere, use the model-applicable checks rather than immediately changing Z height.
See the original record ↓MMU3 nozzle guidance
MMU3 works with the high-flow nozzle, but Prusa documents the standard nozzle as the lower-waste choice with the same speed.
Prusa says MMU3 works with the high-flow nozzle, but documents the standard nozzle as the lower-waste option with the same speed. Confirm the installed nozzle before following a clearing procedure.
See the original record ↓First-layer diagnostic checklist
Prepare the correct print sheet surface for the material · Check expansion-joint orientation · When instructed, cool and power off before checking nozzle seating · Run the LoadCell test from the printer menu
The product page says first-layer calibration is fully automatic through the Loadcell sensor. If the first layer is still uneven or does not adhere, use the model-applicable checks rather than immediately changing Z height.
See the original record ↓Hardware and material boundary
The MK4S uses the direct-drive, all-metal Nextruder and a magnetic heatbed with removable PEI spring-steel sheet. Prusa separates directly supported materials from ABS, ASA, HIPS and PA, which the technical table conditions on the Original Prusa Enclosure with filtration.
First layer, MMU3 and software
Loadcell provides fully automatic first-layer calibration. MMU3 is the documented multi-material route. It works with the high-flow nozzle, but Prusa identifies the standard nozzle as the lower-waste choice at the same speed. PrusaSlicer, Prusa Connect and the Prusa mobile app are named official workflow tools.
FAQ
Original Prusa MK4S frequently asked questions
Each answer stays within the facts and sources shown on this page.
01What is the Original Prusa MK4S build volume?
Prusa lists 250 × 210 × 220 mm. The official table also lists a 0.4 mm high-flow brass CHT nozzle, 290 °C maximum nozzle temperature and 120 °C maximum heatbed temperature.
02Does MK4S require manual first-layer calibration?
The product page says first-layer calibration is fully automatic through the Loadcell sensor. If the first layer is still uneven or does not adhere, use the model-applicable checks rather than immediately changing Z height.
03Which MK4S nozzle should I use with MMU3?
Prusa says MMU3 works with the high-flow nozzle, but documents the standard nozzle as the lower-waste option with the same speed. Confirm the installed nozzle before following a clearing procedure.
Traceable by design
Evidence used for this page
01Original Prusa MK4S 3D PrinterPrusa Research · www.prusa3d.com
Publisher: Prusa Research
Source domain: www.prusa3d.com
Original record: Original Prusa MK4S 3D Printer
Evidence locators:
- Technical parameters — Measurements, Extruder, temperatures and print surface
- Technical parameters — Materials
- Printer comparison — First layer calibration
- MMU3 section and printer comparison
- PrusaSlicer and printer comparison connectivity rows
Scope: United States · Product page
Source published: Unknown
Source updated: Unknown
Last checked by My Device Guide:
Prusa Research · prusa3d.com ↗02First layer issuesPrusa Knowledge Base · help.prusa3d.com
Publisher: Prusa Knowledge Base
Source domain: help.prusa3d.com
Original record: First layer issues
Evidence locator:
- Sheet cleaning, Expansion joints, Nozzle conditions and LoadCell check
Scope: United States · Support page
Source published: Unknown
Source updated: Unknown
Last checked by My Device Guide:
Prusa Knowledge Base · help.prusa3d.com ↗Last reviewed
Sources, model identity and market scope were reviewed.