Prusa Research
Prusa MK4S
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📦 Build Volume: 250 × 210 × 220 mm
🔥 Hotend Thermal Envelope: Up to 300°C (Nextruder-V6-Adapter Standard)
⚡ Operating Voltage: 24V System
🛡️ Chamber Architecture: Open-frame Architecture
Technical Specifications & Kinematics Architecture
| Brand & Model | Prusa MK4S |
|---|---|
| Printing Technology | FDM |
| Build Volume (X × Y × Z) | 250 × 210 × 220 mm |
| Motion Kinematics | Cartesian |
| Extruder Mechanism | Direct Drive Nextruder (1:10 Planetary) |
| Operating Voltage | 24V |
| Max Nozzle Temperature | 300°C |
| Nozzle Thread Standard | Nextruder-V6-Adapter |
| Stock Nozzle Diameter | 0.4 mm |
| Max Bed Temperature | 120°C |
| Filament Diameter | 1.75 |
| Nominal Print Speed | 300 mm/s |
| Enclosure Chamber | Open Frame |
| Multi-Color Capability | Supported |
| Firmware Ecosystem | Buddy Firmware (Open Source) |
| Official Product Link | https://www.prusa3d.com/product/original-prusa-mk4s-3d-printer/ ↗ |
Hardware Review & Technical Notes
The Prusa MK4S is an open-source flagship Cartesian 3D printer engineered by Prusa Research in Prague. Powered by a 32-bit connected STM32 platform with native input shaper, it features the Nextruder assembly with a precision 1:10 planetary gearbox, loadcell-based perfect first-layer calibration without Z-height tuning, and 360-degree high-performance part cooling.