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Prusa · FDM 3D printerPrusa MK4S

Prusa's open-frame Cartesian printer, an updated MK4 with 360° cooling and a high-flow nozzle, sold assembled or as a kit.

  • Build volume250 × 210 × 220 mm
  • EnclosedNo — open frame
  • Released2024
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An Original Prusa MK4, the MK4S’s predecessor, with an orange printed part on its bed
An Original Prusa MK4 FDM 3D printer Photo: Majkluss, CC BY-SA 4.0

Build plate to scale vs A4

A4250 × 210 mm plate

Specifications

Specifications for the Prusa MK4S
TypeFDM 3D printer
TechnologyFDM, Cartesian (bed-slinger), open frame, Nextruder direct drive with load cell, 360° cooling
Build volume250 × 210 × 220 mm
EnclosedNo — open frame
Multi-colourOptional MMU3 (up to 5 colours/materials); sold in an MK4S/MMU3 bundle
Bed levellingAutomatic mesh bed levelling (load cell, print area only)
SoftwarePrusaSlicer; Prusa Connect; Prusa app
ConnectivityEthernet, Wi-Fi (NFC setup), USB drive
Weight7 kg
Released2024

Figures as published by Prusa, checked 4 October 2026. Blank rows mean the maker doesn’t state it, so we leave it out rather than guess.

Strengths

  • Light (7 kg) open-frame design
  • Load-cell automatic mesh bed levelling
  • Optional MMU3 five-colour upgrade
  • Ethernet and Wi-Fi with fully offline operation possible
  • Available as a kit

Things to consider

  • Open frame: ABS, ASA, HIPS and PA listed as needing the optional Original Prusa Enclosure with filtration
  • No built-in camera listed
  • Prusa does not quote a single max speed figure

Who it suits

Hobbyists and workshops wanting a proven, repairable open-frame printer with an optional multicolour upgrade.

Buying in the UK

Sold direct by Prusa Research via prusa3d.com; UK shipping/VAT terms not verified as of 2026-10-04.

Sources

  1. Prusa Research — Original Prusa MK4S product page with technical parameters
  2. Prusa Blog — 'The Original Prusa MK4S is here' (published 2024-08-12)

Checked 4 October 2026.

Prusa’s official website

// Same type

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