Original Prusa MK4 3D Printer

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 MK3
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,

Open-source

Main Features

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 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

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

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

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

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

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.

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!

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

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 1 GB for free) and then transfer it into the printer’s
USB storage and start the print remotely. All communication is encrypted.

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	290 °C / 554 °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

 

Sample Prints

 

 

* 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 kit 3D printer

Double-sided Smooth PEI Print Sheet

Free sample of Prusament PLA ~ 2×25 g

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

Spare parts package

Prusa lubricant for bearings

A pack of Haribo gummy bears

Manufacturing protocol