Fused filament fabrication (FFF/FDM)
Kobra X
Work area
260 × 260 mm (10.2 × 10.2 in)
Original Prusa MK4S 3D Printer kit
Fused filament fabrication (FFF/FDM)
F2 · Intermediate
The MK4S kit at €819 sits between €500 printers with ready-to-use features and closed CoreXY models around €1000. Choosing the kit gets you the loadcell sensor for automatic first-layer calibration and native compatibility with the MMU3 multi-material upgrade, both absent on €500 models like the Bambu Lab A1. Compared with a CORE One kit at €1049, it offers a similar print volume in a bed-slinger format, with a heatbed reaching 120°C; the lack of a built-in enclosure is the trade-off for a lower price. The typical buyer is an experienced hobbyist or professional who regularly prints functional parts in PETG/ASA and wants long-term expandability without paying for full assembly. The main limitation is the open frame, which makes printing ABS difficult without a separate enclosure.
Data from official source
MACHINE PRICE
819 € ≈ $885
MakerSpecs is an independent atlas. We don't sell products.
Work area
250 × 210 mm (9.8 × 8.3 in)
Power
240 W
Dimensions
50 × 55 × 40 cm (19.7 × 21.7 × 15.7 in)
Weight
7.0 kg (15.4 lb)
| Parameter | Value | Source |
|---|---|---|
| Machine dimensions | 50 × 55 × 40 cm (19.7 × 21.7 × 15.7 in) | manufacturer website |
| Weight | 7.0 kg (15.4 lb) | manufacturer website |
| Power supply | 230 V / 50 Hz / 240 W | manufacturer website |
| Work area | 250 × 210 × 220 mm (9.8 × 8.3 × 8.7 in) | manufacturer website |
| Maximum speed | 500 mm/s | manufacturer website |
| XY print surface | 250 mm | Compiled by editorial team |
| Maximum Z height | 220 mm | Compiled by editorial team |
| Kinematics | cartesian | Compiled by editorial team |
| Max nozzle temperature | 290 °C | Compiled by editorial team |
| Max bed temperature | 120 °C | Compiled by editorial team |
| Max print speed | 500 mm/s | Compiled by editorial team |
| Closed chamber | False | Compiled by editorial team |
| Filament sensor | True | Compiled by editorial team |
| Auto leveling | mesh | Compiled by editorial team |
| Standard nozzle diameter | 0.4 mm | Compiled by editorial team |
| Multi-extruder | False | Compiled by editorial team |
| Native Klipper | False | Compiled by editorial team |
| Input shaper | True | Compiled by editorial team |
| Multicolor printing | True | Compiled by editorial team |
| Requires external accessory | True | Compiled by editorial team |
| Maximum colors | 5 | Compiled by editorial team |
Material compatibilities will be available in a future version.
Software
The MK4S runs proprietary Prusa firmware based on Marlin, not GRBL. It is managed through PrusaSlicer (with over 180 official profiles included), Simplify3D, or Cura with community profiles. Files are loaded via USB, local network, or PrusaConnect and the Prusa mobile app; it is not compatible with LightBurn or LaserGRBL, being a filament printer. The machine can run fully offline with no cloud dependency, and receives regular firmware updates along with pre-tuned profiles for Prusament materials.
Reviews from those who use this machine every day will be available in the next version of the platform.
How we verify this sheet
Technical data verified on the manufacturer's official website (recording date shown above). Editorial notes, market positioning and anomaly flags are assisted by the MakerSpecs AI system as a second reader, always validated by the author before publication. Read the full methodology →
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Updates to this sheet and Manufacturer Notes
-
Sheet published Specifications updated: potenza, peso, immagine, attribute.max colors, attribute.input shaper, attribute.klipper native, attribute.multi extruder, attribute.nozzle diameter mm, attribute.filament sensor, attribute.max print speed mm s, attribute.bed temp max c, attribute.nozzle temp max c, attribute.build height z mm, attribute.build footprint short mm, Price updated (from 754 € to 819 €)