Product Detail
MK 4
Vendor: Prusa
Last Updated: 2025-05-13T11:47:57.233Z
Rating: 5.0 ⭐⭐⭐⭐⭐
Answers
Fields highlighted like this are changed from the product's previous update.
| Question | Answer | Comment |
|---|---|---|
| open-protocols | Yes | Since the Prusa MK4 runs on open-source firmware (Prusa's fork of Marlin called Prusa Firmware), the control protocol — primarily G-code — is publicly documented both in Marlin and on Prusa’s GitHub and docs. While some custom G-code extensions may lack full documentation, they are visible in the source. |
| open-firmware | Vendor Open | Prusa ships the MK4 with its own open-source firmware, licensed under GPL. The firmware is available on GitHub, regularly updated, and officially maintained. Repository here: https://github.com/prusa3d/Prusa-Firmware ↗️ |
| open-control | Yes | All MK4 functions are controllable via open-source software. PrusaSlicer (open-source) is the primary tool, and third-party slicers (like Cura or SuperSlicer) work fine. No feature is restricted to proprietary control software. |
| local-control | Yes | The MK4 does not require cloud services. It can be operated entirely via USB or SD card, and PrusaConnect (cloud interface) is optional. |
| local-reflash | Yes | Firmware can be flashed manually via USB using local files. No cloud dependency exists for firmware updates. |
| open-repair | Yes | Prusa provides extensive documentation, exploded diagrams, firmware source, and a full online parts store. The design is modular and repair-friendly. However, there are some Prusa-specific parts (e.g., custom boards, sensors) that are not generic, but they are available directly from Prusa and not artificially locked down. Prusa provides STL files for printable parts, full firmware source, and spare parts for sale. Some electronics are Prusa-specific but not locked. |
| ecosystem-friendly | Active | Prusa is an active supporter of open-source: Maintains PrusaSlicer and Prusa Firmware Contributes to upstream projects Openly documents their hardware and software Tolerates and supports community mods (like Klipper) |
| no-lockout | No | There is no lockout of third-party control software. You can use OctoPrint, Klipper, and other open solutions. There are no authentication checks or forced vendor software paths. |
| open-consumables | Yes | MK4 accepts any 1.75mm filament. There are no RFID chips, DRM, or restrictions. Prusa sells its own filament brand (Prusament), but it is not required or enforced in any way. |
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