Original Prusa MK4S 3D Printer kit, Removable Sheets, Beginner-Friendly 3D Printer DYI Kit, Fun to Assemble, Automatic Calibration, Filament Sample Included, Print Size 9.84 x 8.3 x 8.6 in
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Availability:
In Stock.
Arrives
Tuesday, May 12
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Model: MK4S-KIT-PEI
Features
- With automatic calibration, always-perfect first layer, one-click printing and many other useful features, the MK4S is the best choice for your home, workshop, or company. All print profiles and configurations are in-house tested ensuring that the MK4S effortlessly delivers top-quality 3D prints at a press of a single button from the very start.
- With automatic calibration, one-click printing and an always-perfect first layer, the MK4S is the best entry into the world of 3D printing. Its open design, the result of more than 10 years of evolution, ensures easy maintenance, upgradability and great accessibility. Plus, a detailed handbook guides you through every aspect of the MK4S. When you get the assembled printer, simply take it out of the box, plug it in and once it finishes the automatic calibration, you can start printing right away
- This listing is a DIY KIT for self-assembly; We also offer a fully built and tested 3D printer.
- The printer includes a Free sample of Prusament PLA 2x25 g; Prusa Research offers lifetime technical assistance and 24 hours professional customer service.
Description
The MK4S is the latest iteration of our flagship 3D printing workhorse. Easy to set up and run, with top-class reliability and safety features, the MK4S delivers the highest quality 3D prints faster than ever. Designed and built in the EU.
Brand: ORIGINAL PRUSA
Material: Metal, Plastic
Color: Black Orange
Product Dimensions: 19.6"D x 15.7"W x 21.6"H
Item Weight: 7 Kilograms
Product Dimensions: 19.6 x 15.7 x 21.6 inches
Item Weight: 15.4 pounds
Item model number: MK4S-KIT-PEI
Date First Available: January 26, 2025
Manufacturer: Original PRUSA
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, May 12
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Model: MK4S-KIT-PEI
Great to build and use for kids, can be assembled in a day with a lot of fun. Works fine right after assembling. Different brands of PETG and PLA filament from Prusa, Bambu Lab, and Esun print well even with generic profiles, while extrusion multiplier and bed temperature tuning according to ambient humidity and temperature are beneficial for accuracy to print miniatures. Very durable build and can be moved by the top of the frame. Surprisingly quiet even for a live room. Part cooling is fantastic while still very silent. Prusa Slicer integration (i.e. Prusa Connect) and iOS/Android mobile app with cloud slicer (i.e. EasyPrint) just work too. And it actually costs about the same as a cheap Chinese 3D printer like the Ender 2 v2 with a replaced extruder, powerful full-metal hotend, linear rails, quality Z axes, a custom cooling system, RPI Zero W2 with Klipper, etc.
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Reviewed in the United States on July 29, 2025 by Alexey
Model: MK4S-KIT-PEI
This is simply the best open designn 3D printer available. When purchased as a kit it gives you the opportunity to understand how the system is designed and how to best tune and adjust it over time. There are lower cost 3D printers, but their accuracy and consistency will not match this printer. If you do not take your time and you rush through the assembly of the kit, you would probably be better off buying the fully assembled printer. The more careful and meticulous you are in the assembly, the better the performance of the finished printer will be. There is a wonderful set of videos available online in addition to the printed instructions. I would strongly recommend using the videos to complement the printed instructions. The printer is packaged securely in it's shipping box and has everything that you will need in the box, including Prusa's inclusion of a bag of gummy bears, to serve as your reward for completing the assembly. If build quality and accuracy of printing matter to you, this is the 3D printer to choose.
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Reviewed in the United States on September 17, 2025 by Mitch Buchman
Model: MK4S-KIT-PEI
Works great and buying this printer as a kit did save some money but note that I found it a challenging assembly. I have built quite a few computers but this was more difficult. At the end I wondered whether the saving was worth the frustration. Getting the tension right on drive belts takes much more fussing around than just screwing in a board or a drive. In several places some assembly required awkward reaching around the printer. The step by step directions were good and the comments inserted into the guide by other users were sometimes essential - when the wording in the online guide was not as clear as it could be. Clever idea to include such comments. I added my own when I thought I could contribute. I also used their online 24/7 chat to get help a couple of times when I could not figure out why I could not get the printer to pass a calibration test. It turned out that i had not noticed that one of bearings had slipped out of position. Only thing negative I can think of is that the power cord did not fit very well and could become loose - which would turn the printer off! Fortunately, I had a compatible cord from an old computer and it fits perfectly. I guess I could have tried filing their plug down so it would fit better but easier to just swap cables. I have now printed a number of things starting with the easy to use PLA filament. My first try with the TPU (FLEX) filament was not so good but they do warn you of possible difficulties with that kind of filament.
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Reviewed in the United States on July 18, 2025 by PJ-Jim
Model: MK4S-KIT-PEI
Building this kit is worth the time and effort. The interactive instructions on the website along with comments from other people are extremely useful. It took me 3 days to assemble it, and I didn’t break any of the delicate printed plastic parts, and I only had to sacrifice one thermal pad, and I stripped out just one screw and nut in the beginning. The kit includes many spare parts for small snafus such as these. The design uses many 3D printed parts held together with allen key screws and nuts. A bit tedious to work with but not difficult once you get the hang of it. The interactive instructions are not perfect, but that’s where the comments fill in what details may be missing. Some people report having issues with the automatic calibrations at the end, and talk about that in the comments. As I worked through my assembly, I followed the instructions, and only kept the comments in mind for later if I had calibration issues. My calibrations all passed the first time just from following the instructions, and then I started printing models I already had ready to go. I used the recommended Prusa slicer software and the default settings deliver some impressive results. I would say that the inexpensive Elegoo PLA filament that I bought with it works great!
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Reviewed in the United States on April 13, 2026 by Alex G
Model: MK4S-KIT-PEI
This is a great product. I would suggest to be very patient and carefully read assembly instructions if you get the kit. The belt tuning (tension) app didn't work for me, but it's not necessary.
Reviewed in the United States on April 28, 2025 by Robert Taylor
Model: MK4S-KIT-PEI
An absolute good buy. Took about two weeks to assemble in my spare time. Directions are great! Machine works very well, would buy again in a heartbeat. I cannot say enough positive things about the machine. Fun to assemble, fun to use and make different things for the grandkids. Also make odd ball parts for everyday living. Fun machine.
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Reviewed in the United States on August 27, 2025 by Bill C