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MK4S
The Prusa Research MK4S is a FDM 3D printer released in 2024 by Prusa Research, with a build volume of 250×210×220 mm and MSRP of €1,099. Compatible with multi-material system MMU3 (5 slots). Maximum speed 300 mm/s. Current status: active.
Manufacturer's suggested retail price (MSRP). Not the store price — the actual price may vary.
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Technical specifications
| Technology | FDM |
|---|---|
| Build volume | 250×210×220 mm |
| Weight | 7 kg |
| Max speed | 300 mm/s |
| Max acceleration | 10,000 mm/s² |
| Max nozzle temp | 290 °C |
| Nozzle material | hardened steel |
| Drive | direct |
| Flow rate | 30 mm³/s |
| Max bed temp | 120 °C |
| Bed material | PEI plate |
| Auto-leveling | load cell auto mesh |
| Enclosed | No |
| Heated chamber | No |
| AMS compatible | Yes (MMU3, 5 slots) |
| WiFi | Yes |
| Camera included | No |
| Official slicer | PrusaSlicer |
| OrcaSlicer support | Yes |
| Power | 240 W |
| Noise | — |
What materials can the MK4S print?
This comes from four facts on its spec sheet: the nozzle reaches 290 °C, the bed 120 °C, and the machine is open-frame with a direct-drive extruder. Those four facts decide most of the list: nozzle temperature sets the ceiling on what you can melt, the bed decides whether the first layer sticks, the enclosure keeps large parts from warping, and the extruder type rules flexibles. We don't test the machine — this is guidance derived from verified data, not a guarantee.
In short: it prints PLA, PETG, TPU (flexible) without a fight, and it can reach ABS, ASA, Nylon (PA), Policarbonato (PC) with conditions — the detail for each is below.
- PLAYes
Yes. PLA has no special needs: any FDM printer like the MK4S prints it out of the box.
- PETGYes
Yes. With a nozzle up to 290 °C and a bed up to 120 °C it comfortably meets PETG's needs.
- TPU (flexible)Yes
Yes. It has a direct-drive extruder, ideal for flexibles; prints TPU well (go slow).
- ABSWith caveats
With caveats. It reaches 290 °C, but it's open-frame: ABS can warp and ventilation is advised. Doable in a draft-free spot or by adding an enclosure.
- ASAWith caveats
With caveats. It reaches 290 °C, but it's open-frame: ASA can warp and ventilation is advised. Doable in a draft-free spot or by adding an enclosure.
- Nylon (PA)With caveats
With caveats. It reaches 290 °C but is open-frame; Nylon warps in drafts and absorbs moisture. Enclosure + drying almost mandatory. For carbon-fibre variants, use a hardened-steel nozzle.
- Policarbonato (PC)With caveats
With caveats. It has the temperature (290 °C) but is open-frame; PC warps badly without an enclosure. Only with one added. For carbon-fibre variants, use a hardened-steel nozzle.
| Material | Prints it? | Why |
|---|---|---|
| PLA | Yes | Yes. PLA has no special needs: any FDM printer like the MK4S prints it out of the box. |
| PETG | Yes | Yes. With a nozzle up to 290 °C and a bed up to 120 °C it comfortably meets PETG's needs. |
| TPU (flexible) | Yes | Yes. It has a direct-drive extruder, ideal for flexibles; prints TPU well (go slow). |
| ABS | With caveats | With caveats. It reaches 290 °C, but it's open-frame: ABS can warp and ventilation is advised. Doable in a draft-free spot or by adding an enclosure. |
| ASA | With caveats | With caveats. It reaches 290 °C, but it's open-frame: ASA can warp and ventilation is advised. Doable in a draft-free spot or by adding an enclosure. |
| Nylon (PA) | With caveats | With caveats. It reaches 290 °C but is open-frame; Nylon warps in drafts and absorbs moisture. Enclosure + drying almost mandatory. For carbon-fibre variants, use a hardened-steel nozzle. |
| Policarbonato (PC) | With caveats | With caveats. It has the temperature (290 °C) but is open-frame; PC warps badly without an enclosure. Only with one added. For carbon-fibre variants, use a hardened-steel nozzle. |
Need the materials it struggles with? These printers handle them
Policarbonato (PC)
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Sources & references
Specs cross-checked against these public sources:
- Web oficial fabricanteManufacturer page
Specs taken from the sources cited above; we have no recorded date for the last check. Confidence in the data: high.