Exceptional Print Quality and Reliability

Speed is nothing without quality and reliability. There's no point in chasing speed records when the prints barely hold together. While the MK4S is twice as fast compared to the previous generation, we put extra care into improving the print quality even further. With the redesigned 360° cooling, high-quality high-flow nozzle, robust parts, and fine-tuned print profiles, the MK4S delivers exceptionally good performance with precisely directed cooling, extreme 75° overhangs, and easily handles even flexible filaments. The MK4S offers the best dimensional accuracy, enabling you to print parts that fit perfectly together.

High-Performance 360° Cooling

The MK4S features a brand new 360° cooling system consisting of a high-performance turbine and a redesigned fan shroud - the result of intensive airflow simulations to ensure that the cold air is directed precisely onto the print. This solution is much more effective than blanket fans, because the airflow is not blocked by the print itself. The weight of the Nextruder remains virtually unchanged, but the performance is far better. Even with the large turbine, the printer is still beautifully quiet and can deliver prints with extreme 75° overhangs. Why does this matter? Because where other printers would already need a hefty amount of supports, the MK4S can easily deliver a beautiful-looking print. Less supports means shorter print times and less material wasted.

High-Flow Nozzle as Standard

The MK4S comes standard with a custom-made high-flow nozzle based on CHT technology. A high-flow nozzle enables faster printing, but also produces more durable prints. Plus, you can get more from the filaments you already know and love - you don’t have to look for any specialized high-flow filaments. The new high-flow nozzle delivers between 50 to 114% improved flow rate depending on the material and nozzle diameter. We’re also offering an optional Nextruder nozzle adapter so you can install any kind of V6-compatible nozzle.

Quiet High-Speed Printing

Twice as fast as the MK3S+ and among the fastest desktop printers, the MK4S uses a native implementation of Input Shaper and Pressure Advance technologies to eliminate resonances and optimize filament flow which is further enhanced by the new high-flow nozzle. The result is doubled print speed and beautifully quiet operation, so you can keep the MK4S on your desk and continue working undisturbed. The MK4S can print a SpeedBoatRace Benchy in 14 minutes and a “Bonkers” Benchy in 8 minutes.

Wi-Fi and Prusa Connect

The Original Prusa MK4S is equipped with a Wi-Fi module and an ethernet port, allowing you to control your printer from anywhere using our secure and encrypted Prusa Connect system. Drop a G-code into your browser window and start the print in mere seconds after the beginning of the upload. Prusa Connect offers a robust set of options, allowing you to schedule your prints, or monitor them remotely via a webcam. The MK4S also allows you to quickly set up the Wi-Fi with a simple NFC tap thanks to the new (fully optional) Prusa app.

Perfect First Layer Out of the Box

Forget Live Adjust Z or manually adjusted screws. The MK4S lays down an absolutely pristine first layer every time. It doesn't matter what kind of print surface you use, the MK4S Loadcell sensor will always precisely measure the offset without being thrown off by reflective or textured surfaces. The sensor doesn't rely on visual data, offering unparalleled precision on every kind of print sheet out there!

Open design - simple maintenance

Our machines are built to last. We operate a massive print farm with over 700 of our printers running 24/7. This means we design our machines to withstand non-stop operation with minimal downtime. The open “bed-slinger“ design is the result of a 10-year evolution and enables the easiest access to all parts without a lengthy disassembly process. No welded or glued parts, everything can be taken apart with a set of Allen keys.

Tackle any type of filament

No matter whether your project requires PLA and PETG, or even ASA and carbon-filled filaments, the MK4S can handle them with ease - even flex! With its direct drive Nextruder, printing flexible materials is easier than ever before and you can create amazing flexible projects without breaking a sweat (or your printer). Most materials do not require an enclosed printing space, but for those that do, there's a dedicated Original Prusa Enclosure (see below).

100% Privacy

We do not collect information about your prints or your printer’s surroundings. We believe that no matter whether you’re developing a new-generation space shuttle, or just printing silly things for your friends, no organization should be interested in this information. This is why our printers can be found in top companies, universities and research institutions around the world.

Our printers are primarily designed for completely offline operation with no drawbacks or limitations. You have the option to share data with our support and connect your printer to the Prusa Connect remote print management system, but only if you choose to do so.

Our code is open source, so you can always check that we aren’t cheating or stealing your files, even when you’re connected to the internet. See where our printers are used.

Basic package includes

• Original Prusa MK4S
• Smooth PEI Sheet
• Toolset: Uni-wrench; 13-16 wrench; Nose pliers; Allen and torx keys
• Spoolholder
• 3D Printing Handbook
• Prusament PLA Prusa Galaxy Black 1kg
• Alcohol-saturated wipes, acupuncture needle
• USB drive with sample prints (G-codes)
• Prusa lubricant for bearings
• A packed of yummy Haribo