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Original Prusa i3 MK4 3D printer

Original Prusa i3 MK4 3D printer

Regular price $ 1,299.00 USD
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Original Prusa MK4 is built around our new 32-bit connected architecture and the next-generation extruder (Nextruder). It lays down a perfect first layer every time without Live Adjust Z and it has support for high-speed printing with Input Shaper and Pressure Advance. We also improved the safety features even further. Plus, there are a ton of useful things, such as quick-swap nozzles, built-in support for remote printing and webcams, and many more. And it’s still beautifully quiet.

  • The successor to the award-winning 3D printing workhorse Original Prusa MK4
  • Effortlessly fast and silent 3D printing. Check out the sub-20 minutes Benchy video on MK4
  • Fully automatic first layer calibration thanks to the Load Cell sensor
  • Print right out of the box - no print sheets profiles, no tinkering, no Live Adjust Z!
  • Nextruder – our new extruder with a custom breakout board and smart features
  • Safety features like filament sensor and power panic that won't let you down
  • Easy maintenance, quick-swap nozzles, and removable print sheets
  • Support for a wide range of materials, incl. PLA, PETG, Flex, Nylon, ASA, PVA, PC, PP, composites and more
  • Color LCD screen with simple-to-navigate UI and quick access to all important functions
  • Ethernet and Wi-fi connection
  • Made in the EU, hassle-free warranty, 24/7 live chat support
  • Open-source


Main Features

High-speed printing with ease

High-speed printing with ease

Thanks to our own implementation of Input Shaper and Pressure Advance technologies in the MK4’s firmware, the printer can eliminate resonance in prints and predict the flow of the filament. The result is a decrease in print time by up to 70% compared to MK3. What's more, the printer is very quiet even at these speeds - check out the sub-20-minute Benchy video. Support for high-speed printing is just around the corner via a firmware update - read the blog post here.

Perfect First Layer on a First Try

Perfect First Layer Out of the Box

Thanks to the precise Loadcell sensor, MK4 can lay down a perfectly smooth and consistent first layer automatically without any user input. At the beginning of a print, the printer taps the sheet with the nozzle in a grid-like pattern to measure the distance and then calculates the correct offsets. The result is a perfect first layer on every surface, without manual adjustments.

The Nextruder with Breakout Board

The Nextruder with Breakout Board

Extruder is the heart of every 3D printer. And this is a special one. On most 3D printers today, replacing extruder components is a rather complicated process. With the new connector break-out board inside the Nextruder, all of the parts, such as fans, heaters, thermistors, etc., are connected directly there. If you need to swap anything, it takes just a minute.

32-bit xBuddy Mainboard

32-bit xBuddy Mainboard

Our new xBuddy board is a 32-bit STM32-powered mainboard with many great features. It has several unique hardware-based safety protection systems, communicates with four thermistors, has all important ports (Ethernet, Wi-Fi, works with USB-A flash drives) and more. The entire board was designed, manufactured, and tested in-house.

Exceptional Print quality

Exceptional Print quality

The MK4 comes with redesigned, more robust plastic parts and new precise 0.9° stepper motors (0.9° / step; low inductance) on the X and Y axes that help eliminate Vertical Fine Artifacts on prints. Plus, there are thicker 10mm rods on the Z-axis. The result is, that prints look better than ever and even printing with “problematic” filaments like Flex is a breeze.

Color LCD screen and simple UI

Color LCD screen and simple UI

MK4’s display supports G-code thumbnails, QR codes and other elements that make using the printer so much easier. We also redesigned many of the existing menus and added a customizable footer panel. Directly under the LCD, there is an RGB status bar to signalize the current status of the printer. Next to the LCD, there’s a USB-A port for standard USB flash drives.

Quick-Swap Nozzles

Quick-Swap Nozzles

Thanks to two quick-release thumbscrews on the side of the body of Nextruder, which holds the nozzle in place, you can swap nozzles easier than ever. The MK4 is using special nozzles with an all-metal filament guide (no PTFE tubes anywhere), which improves the overall reliability of the printer. Simple Nextruder-to-V6 adapter is available.

3d model in prusaslicer

Slice with PrusaSlicer

Our internally developed multiplatform slicer comes with in-house made and fully tested profiles for all of our 3D printers and a wide range of filaments. With built-in tools, such as organic supports, cutting, automated object distribution, ironing and many others, you will turn your 3D models into print files in no time!

seven diferent color filaments next to each other

Support for a wide range of Materials

The MK4 is fully compatible with a wide range of various types of materials. No matter whether you want to print something for fun from PLA and flexible materials, or you need to produce durable prototypes from PETG, ASA, Polycarbonate and Polypropylene - the MK4 can handle them without any problem.

Prusa Connect and Connectivity Options

Prusa Connect and Connectivity Options

MK4 is, along our other 3D printers, fully supported by Prusa Connect, which allows you to control the printer via internet. You can drag-and-drop G-Codes into the browser window to upload print files first into the cloud (each user gets 2 GB for free) and then transfer it into the printer’s USB storage and start the print remotely. All communication is encrypted.



What you can print with the MK4? Almost anything! Check out the inspiration and free 3D models for kitchen, living room, home decor and garden on

You can also browse amazing models from designers from all over the world submitted in thematic contests.





Whether you're maker, cosplayer, pop-culture fan, gamer, modeller or board-game player, MK4 can open up new possibilities for you.

On, you can share your designs and makes with others or download 3D models for free. Join us!



Original Prusa 3D printers are used in industries worldwide as efficient, easy-to-use, and reliable 3D printing workhorses.

Our cost-effective solution with simple maintenance is a perfect choice for everyone - from start-ups to the large international companies!





Join the tens of thousands of schools, universities, and other educational institutions worldwide that have adopted 3D printing! Explore the vast possibilities of this essential, state-of-the-art technology.

Read more case studies and examples of usage of the Original Prusa printers in education.


Architecture & Design

A quick and affordable way to create refined models with intricate detail. Free up the time of your skilled designers and let the 3D printers do the hard work.

Check out the videos and articles about leading designers and artists using our 3D printers in their work.





Modern-day automotive industry faces many challenges - from disrupted supply chains to rapid technology development and constant changes. 3D printing brings the necessary efficiency and flexibility.

Here are examples of where our 3D printers helped with the production and prototyping in the automotive industry.

Technical Parameters

Build Volume 250 x 210 x 220 mm | 9.84 x 8.3 x 8.6 in
Filament diameter> 1.75 mm
Layer height 0.05-0.30 mm
Mainboard Custom 32-bit xBuddy electronics with STM32
Stepper Drivers Trinamic 2130
Stepper motors Precise 0.9° X,Y stepper motors (prevents VFA)
Extruder Nextruder, Direct Drive, E3D V6 compatible (with adapter)
Extruder electronics Custom breakout board for connecting fans, thermistors and other parts.
Filament path Aluminum heatsink, all-metal hotend, no PTFE tube
Drive system Nextruder Planetary Gear System, 10:1 gearbox ratio
Nozzle diameter

0.4mm (default) / other nozzle diameters supported

Max nozzle temperature 300 °C / 572 °F
Max heatbed temperature 120 °C / 248 °F
LCD screen 3.5″ graphic 65k color screen
Connectivity LAN, Optional ESP Wi-Fi module (delivered with the printer)
Print medium USB drive / LAN / internet via Prusa Connect
Advanced sensors Filament sensor, Loadcell sensor, Power panic, 4 high-precision thermistors (genuine Semitec) + fan motors RPM monitoring
Print surface Magnetic heatbed with removable PEI spring steel sheets
Bed calibration Automatic, Mesh Bed Leveling (only on print area)
Supported materials PLA, PETG, ABS, ASA, Flex, HIPS, PA, PVA, PC, PP, CPE, PVB, NGEN, composites and more
Printer dimensions (without spool) 7 kg, 500×550×400 mm; 19.6×21.6×15.7 in (X×Y×Z)
PSU 240W, custom made by Delta with Power Panic HW
Power consumption PLA settings: 80W / ABS settings: 120W

* Consumable parts, such as print sheets (smooth, textured, etc.), are not covered by the warranty since their coatings are expected to deteriorate over time, unless the failure is due to a defect in materials or workmanship. Cosmetic damage, which includes, but is not limited to, scratches, dents, cracks, or other aesthetic damage, is also not covered. Only sheets defective upon delivery are covered by the warranty.

Basic package includes:

  • Original Prusa MK4 Assembled 3D printer
  • Double-sided Smooth PEI Print Sheet
  • 1kg of Prusament PLA Galaxy Black
  • 3D Printing Handbook
  • USB drive with sample prints (G-codes)
  • Toolset: Uni-wrench, 13-16 wrench, Philips screwdriver, Nose pliers, Allen and torx keys
  • Alcohol-saturated wipes, acupuncture needle
  • Spoolholder
  • Prusa lubricant for bearings
  • A pack of Haribo gummy bears
  • Manufacturing protocol


Customer Reviews
4.8 Based on 36 Reviews
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United States United States

Assembled Printer -- Plug and play!

I bought my first Prusa MK3S+ printer kit three years ago. It does take time to build, but is worth it in learning the machine if any issues do arise (any I had were user error or filament problems, the machine really is fabulous). Fast forward three years and I suddenly have need for a second printer! The first one has been a real work horse and I have learned a lot. The assembled version was basically take it out of the box, plug it in, run that first layer calibration, adjust if needed and you are ready to print! It was shipped very quickly and very well packaged. This saves me time and has more inventory being created quickly for one of my businesses. Super excited about this and if I need another printer to add I will be purchasing from here again for sure. I just wish it came with at least one gummy bear! Or a gummy bear sticker! But that's okay. :)

Mark T.
United States United States

Love my new printer!

The printer shipped fast and was well packed. All the parts were in the kit and nothing was missing. The printer prints perfect with almost no configuration or maintenance and has been in near constant use since I assembled it. Thanks Prusa and Printed Solid!

joseph b.
United States United States

Perfect Printer

Build time was pretty extravagant but that was because I took my time. Printing is 100% the easiest I've ever had it ever since I got it up and running. Quality is amazing and the Prusa has taken everything I've thrown at it so far.

Pat K.
United States United States

Awesome printer

Best printer. Excellent quality

Patrick K.
United States United States


Best printer ever.