FFFManufacturer image: PrusaPrusa MK4S
Open-frame filament printer offered assembled or as a kit.
Source reviews: 2026-10-15, 2026-10-16.
Specifications are reported claims, not independent test results.
The details that matter.
Published specifications for this model. Follow a field's source for its configuration and measurement conditions; older fields refer to the profile's reference list.
| Introduction year | 2024 |
|---|---|
| Model family | Original Prusa i3 |
| Process | FFF |
| Build envelope (X × Y × Z) | 250 × 210 × 220 mm |
| Nominal box volume | 11.55 L · calculated from the envelope |
| Enclosure | Open frame |
| Maximum nozzle temperature | Not verified |
| Materials cited in this profile | Not verified |
| Manufacturer listing status | Listed by manufacturer |
| Regional stock and price | Check the manufacturer |
| Market grouping | Desktop · editorial grouping |
Technical specifications
| Cooling System | Extruder-mounted turbine with 360-degree shroud |
|---|---|
| Included Nozzle | Custom CHT-based high-flow nozzle |
| Motion Compensation | Input Shaper and Pressure Advance |
| Network Setup | NFC-assisted Wi-Fi setup through Prusa app |
| Firmware Updates | USB drive; offline updates supported |
| Delivery Options | Assembly kit or assembled |
| Multi Material Option | Separate MMU3 unit or assembled bundle |
| Optional Expansion | GPIO Hackerboard and accelerometer accessory |
| Software | PrusaSlicer and Prusa Connect |
MK4S changes
A redesigned cooling system and high-flow nozzle distinguish MK4S from MK4. The revised airflow improves cooling around the deposited part, while nozzle throughput still depends on the chosen material.
Connectivity and modification
The mobile app is optional, and printing remains possible offline. The separate accelerometer accessory is intended to retune Input Shaper after hardware modifications.
Introduced in 2024.
Announced August 12, 2024; assembled printers and kits were available at announcement.
Family: Original Prusa i3 · Current / announced
What changed
- Redesigned 360-degree part cooling
- High-flow nozzle
Read this with the specifications
Manufacturer listing; stock and regional availability are not verified.
A larger nominal envelope does not establish better print quality. Fit depends on the configuration, usable area, supports, and orientation.
INDUSTRY F340
Manufacturer-issued brochure preserved by distributor Multi3DPrint; original manufacturer links are no longer available.