Prusa Research has released the MK4S, an upgraded version of their popular MK4 3D printer that aims to boost speed and print quality. The MK4S retains the familiar Cartesian design of previous Prusa i3 models while introducing some key improvements.
Key Upgrades
The most significant changes in the MK4S are:
- New 360-degree cooling system with a high-pressure fan for improved overhangs and surface quality
- Custom high-flow Bondtech CHT nozzle that increases volumetric flow by 50% for PLA
- NFC chip for easier Wi-Fi setup via smartphone app
- Optional GPIO board for custom accessories
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| Showcasing enhanced printing capabilities with vibrant and intricate designs enabled by the MK4S |
Performance Improvements
With the new cooling system and high-flow nozzle, Prusa claims the MK4S can print up to 50% faster than the MK4 when using PLA filament. Our testing showed the MK4S was indeed able to match or exceed the print speeds of popular CoreXY printers like the Bambu Lab P1P, while maintaining excellent print quality.
In head-to-head comparisons, the MK4S consistently produced cleaner prints with better overhangs, sharper details, and fewer artifacts compared to the Creality K1C and Bambu P1P - despite printing at similar speeds.
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| Comparison of print quality: MK4S on the right exhibits a smooth and shiny finish, demonstrating superior print fidelity |
Reliability and Ease of Use
True to Prusa's reputation, the MK4S offers exceptional reliability and ease of use. Setup is nearly effortless - simply unbox, plug in, and you're ready to start printing in minutes. The automatic bed leveling and calibration worked flawlessly in our testing.
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| Detail of the Prusa MK4S print head, highlighting its user-friendly design and innovative technology |
Pricing and Upgrade Path
At $1,099 for a fully assembled unit or $799 for a DIY kit, the MK4S is certainly a premium-priced printer. However, Prusa is offering a very affordable $99 upgrade kit for existing MK4 owners. This upgrade path is a hallmark of Prusa's commitment to their user base.
Who Should Buy the MK4S?
The Prusa MK4S is an excellent choice for:
- Professionals and businesses needing a reliable workhorse printer
- Experienced hobbyists looking to upgrade from entry-level machines
- Anyone prioritizing print quality and consistency over raw speed
While the price may put it out of reach for beginners, the MK4S represents a solid long-term investment for those serious about 3D printing. Its robust construction, easy maintenance, and Prusa's extensive support network ensure it will remain a capable machine for years to come.
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| The Prusa app facilitates easy Wi-Fi setup and enhances user experience, appealing to both professionals and enthusiasts |
Verdict
The Prusa MK4S successfully brings the classic i3 design up to speed with modern CoreXY printers while retaining its legendary reliability and print quality. While not the fastest or cheapest option on the market, it offers a compelling balance of speed, precision, and user-friendliness that will appeal to a wide range of users.
Pros:
- Excellent print quality
- Significantly faster than previous Prusa models
- Very reliable and easy to use
- Affordable upgrade path for MK4 owners
Cons:
- Premium pricing
- Not enclosed (optional enclosure available)
- May be overkill for casual users
For those willing to invest in a premium 3D printing experience, the Prusa MK4S delivers on its promises and cements Prusa's position as a leader in the prosumer 3D printing market.