Introducing the Original Prusa i3 MK3S+ 3D printer!

The Original Prusa i3 MK3S+ is the latest version of our award-winning 3D printers. We have upgraded the MK3S with a brand new SuperPINDA probe for improved first layer calibration, added high-quality Misumi bearings and various useful design tweaks to make the printer easier to assemble and maintain. The MK3S+ includes all the proven features of the previous models, including the heatbed with removable PEI spring steel print sheets, automatic Mesh Bed Leveling, filament sensor, power loss recovery (power panic) and safety features. And it is still as silent as ever!

The MK3S+ is available as an assembly kit, which is the best way to get to know your new 3D printer. Assemble it screw by screw to learn truly everything about its design and how it works! You can also get it fully assembled and factory tested, so all you need to do is to unpack it and plug it in.

Thanks to all of these (and many other) features, the MK3S became the “Best 3D Printer” according to ALL3DP. The MK3S is also the highest-rated 3D printer, and the “Editor’s Choice”, in the prestigious MAKE:MAGAZINE’s Digital Fabrication Guide 2019. The MK3S is also featured in TechRadar's Best 3D printers of 2021 as The best all-around 3D printer. NY Times wrote that "...of the 11 printers we’ve tested over the past five years, the Prusa i3 MK3S printer has produced the largest and best-looking prints." According to ZDNet, the MK3S is "The best pro-sumer 3D printer under 1000 USD."

The functionality of the MK3S+ can be further enhanced by our unique Multi-Material Upgrade 2S for printing with up to 5 filaments simultaneously.

Our printers have received many awards over the years and we keep working hard to make them even better!

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What’s new in the MK3S+

SuperPINDA probe

SuperPINDA probe features a hiqh-quality sensor for a fully-automatic Mesh Bed Leveling process. Before every print, the MK3S+ probes the bed in several places and creates a virtual heightmap of the print area. This process ensures that the first layer will always be spot on!

Misumi Bearings & more

The MK3S+ features a new set of metal clips for the genuine MISUMI bearings on the Y-axis. The belt tensioning mechanism on the X-axis was reworked and the X-end plastic parts reinforced. The filament path in the extruder was altered for better support of flexible filaments.

Dozens of tweaks

With all the cumulative upgrades from the entire MK3’s life cycle on board, the MK3S+ is the best version of our award-winning 3D printer so far. Genuine Gates belts, Bondtech drive gears, EINSY RAMBo motherboard, IR filament sensor, and many other features are the reason why the MK3S+ is the perfect 3D printing workhorse.

What we are proud of...

The most significant features of the Original Prusa i3 MK3S+

Removable print sheets

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Spring steel sheets are easy to maintain and make removing the printed object from the print surface a breeze. We offer three types of print surface: smooth, textured and satin to cover all your needs when printing from a wide range of different materials - most of which do not require any special separation layers or surface preparation.

High-quality parts

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The MK3S+ features an aluminum extrusion Y-axis assembly. Thanks to the milled dural frame, the MK3S+ is stable, rigid, and easy to assemble. Combined with our internally developed extruder featuring Bondtech gears and the E3D V6 hotend, the MK3S+ can print high-quality objects up to 210 mm in height.

Mesh Bed Leveling

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Thanks to the SuperPINDA probe, the MK3S+ can use the Mesh Bed Leveling process to compensate for microscopic imperfections of the print sheet, and inconsistencies caused by the assembly and stacking of the manufacturing tolerances of various parts. Achieving a great-looking first layer is quick and easy.

Power Loss Recovery

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Are you afraid of a blackout ruining your 48-hour print? Worry no more - the MK3S+ can deal with that! The printer can fully recover from the loss of power and continue printing exactly where it left off. It detects power interruptions and shuts down the heatbed and extruder heating, and saves the last known location.

Filament sensor

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The MK3S+ further enhances the reworked extruder from the MK3S. The built-in filament sensor uses a reliable trigger system, which detects whether a strand of filament is inserted into the extruder. It can detect any type and color of filament and is not susceptible to mechanical wear.

Support for plenty of materials

The MK3S+ 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 MK3S+ can handle them with ease.

Slice with PrusaSlicer!

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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 advanced support generation, cutting, automated object distribution, ironing and many others, you will turn your 3D models into print files in no time!

Silent and fast

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Thanks to the Trinamic 2130 drivers and super silent fan, the MK3S+ supports the stealth printing mode, which makes the printer extremely quiet. Even in the normal printing mode, the MK3S+ is quieter than most 3D printers on the market. In the normal mode, the MK3S+ can achieve a print speed of more than 200 mm/s!

Open-source Hardware & Firmware

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We develop firmware for all of our 3D printers and test every new version thoroughly before release. Ongoing development and regular updates ensure that our machines are packed with useful features, such as print sheet profiles, automated calibration, Mesh bed leveling, advanced diagnostics, remaining print time estimation, Octoprint support and more!

Read more about the features introduced by the MK3S+ upgrade here, and check out the announcements of the MK3S and the original MK3.

Check out the official announcement video

Original Prusa i3 MK3 - Assembly Timelapse

Original Prusa i3
for businesses
Built and calibrated

  • Built, calibrated, tested and with a full warranty
  • 10% discount on subsequent orders of assembled i3 printers and filaments
  • Premium support over email + forum
  • Consultation of your use - case based

Original Prusa i3
assembly kit
for enthusiasts

  • Warranty on parts only
  • 5% discount on subsequent orders of filament
  • Premium support over email + forum
  • The best assembly instructions proven by thousands of builders

Feel free to contact us to discuss your needs. 🙂

The Original Prusa i3 MK3/S/+ reviews

ANIWAA review

"The MK3S is capable of delivering consistent quality prints and PrusaSlicer does a great job at prepping STL files, [it's] an excellent 3D printer that can provide professional-grade results."

PC Mag review

"The preassembled version of the Original Prusa i3 MK3S is a cinch to get up and running, is easy to operate, and has a good slicing program. It produced consistently beautiful prints in our testing, with no misprints."

The New York Times review

"Of the 11 printers we have tested over the past five years, the Prusa i3 MK3S printer has produced the largest and best-looking prints."

STIFTUNG WARENTEST: 3D DRUCKER TEST 2020

"Test winner: Best device in the test, very versatile, can print in multiple colors. Processes almost everything there is in filament: PLA, ABS, PETG, Nylon, Flex and more." (translated from German)

HACKSPACE UK REVIEW

"You can get under the hood and tinker with this or change that, but you don’t have to. MK3S is a printer that ‘just works’ for beginners, yet is still powerful enough for advanced use. 10/10”

CHIP (DE) review

"As the test shows, the Prusa Research Original Prusa i3 MK3S did a lot right. It is well processed, has many great features and the printing costs are very low. Especially the print quality is excellent.”

FORBES: The Best 3-D Printers of 2019

"Designers that rely on 3-D printing as part of their livelihood use Prusa printers to turn out consistent, quality results.These kits contain expertly chosen parts, with an eye on recent technological upgrades.”

All3DP MK3S Review

"We tested it using its default settings and found it extremely capable. Its print quality is truly exceptional and it’s an easy-to-use, straightforward machine.”

TechRadar Review

"If you're looking for your first 3D printer, you like to tinker, or you run a business and want a good reliable machine then look no further than the Original Prusa i3 MK3S. ”

Windows Central Review

"The team at Prusa Research have made something special with the MK3. If you only ever own one printer, make it this one. Of course, once you buy it you will want more of them, and that's ok too. ”

3D Maker Noob MK3 review

"In short. What I don't like about this printer? The rubber feet. What I like? Absolutely everything else!”

ALL3DP MK3 REVIEW

"Using this 3D printer has been a joy and an education. (...) The Original Prusa i3 MK3 is highly, thoroughly, and unreservedly recommended.”

MAKE: Magazine MK3 Quick Look

"This has a lot of really exciting features that are pushing what the industry is going to be doing.”

Thomas Sanladerer: MK3 review

"MK3 - highly recommended. I'm really looking forward to everything this printer does becoming standard everywhere.”

GreatScott!: MK3 review

"With it's combination of useful new features, along with the reliability and quality of the prints, this is a 3D printer that, especially in the kit form, offers a great price-performance ratio.”

3D PRINTING NERD - MK3 UNBOXING / 3D PRINTING / FIRST IMPRESSIONS

"Josef Prusa and Prusa Research sent over a fully assembled Prusa i3 mk3 3d printer for me to test out and show off on the channel.”

Maker's Muse: MK3 review

"The smarts, the removable print surface and dependable quality make it perfect for design and prototyping.”

3D Insider: MK3 review

"It is without a doubt the best 3D printer under $1,000 (...) It offers outstanding quality for a reasonable price and comes with a truckload of features.”

Full features list

Basic information

  • Build volume: 25×21×21 cm (9.84"×8.3"×8.3")
  • Layer height: 0.05 - 0.35 mm
  • Nozzle: 0.4mm default, wide range of other diameters/nozzles supported
  • Filament diameter: 1.75 mm
  • Supported materials: Wide range of thermoplastics, including PLA, PETG, ASA, ABS, PC (Polycarbonate), CPE, PVA/BVOH, HIPS, PP (Polypropylene), Flex, nGen, Nylon, Carbon filled, Woodfill and other filled materials.
  • Max travel speed: 200+ mm/s
  • Max nozzle temperature: 300 °C / 572 °F
  • Max heatbed temperature: 120 °C / 248 °F
  • Extruder: Direct Drive, Bondtech gears, E3D V6 hotend
  • Print surface: Removable magnetic steel sheets with different surface finishes, heatbed with cold corners compensation
  • Safety features: IR filament sensor, high-quality Delta PSU with Power Panic, 3 thermistors, RPM monitoring
  • LCD Screen: Monochromatic LCD

Advanced features

  • Controller: EINSY RAMBo 8-bit board  with Trinamic 2130 drivers (256 microstepping), co-developed with Ultimachine, sensorless homing for X and Y axes
  • Mesh Bed Leveling: Advanced high-quality SuperPINDA sensor (Super Prusa INDuction Autoleveling sensor)
  • Print sheet profiles: Firmware supports print sheet profiles to store Live Z calibration data to enable quick switching between different print sheets. 
  • Filament sensor: IR sensor built-in, supports filament auto-loading. Print pauses when filament runs out.
  • Power Panic: Hardware-based, single G-code line accuracy
  • Ethernet connection: via Raspberry Pi (optional)
  • Wi-Fi connection: via Raspberry Pi (optional)
  • Advanced sensors: 3 thermistors, fans RPM monitoring, SuperPINDA
  • Calibration: Automatic, Mesh Bed Leveling, SelfTest
  • Print medium: SD card (16 GB card included)
  • Firmware update: via PC (USB cable)
  • PSU: Custom-made Delta PSU with hardware-based power panic
  • Advanced features: Automatic filament loading, steel sheet profiles, Octoprint compatibility and more 
  • New features introduced through firmware upgrades

6 reasons to buy the MK3S+

GREAT USER SUPPORT

We offer 24/7 tech support via live chat and email in seven languages. Our printers come with detailed instructions and guides for easy assembly and maintenance. You can also visit our knowledge base, community forum, Facebook groups and official Blog, where we publish useful 3D printing tips and tricks, contests and more!

FUN TO ASSEMBLE

The MK3S+ assembly kit is an excellent first step into the world of 3D printing. You will get to know your 3D printer inside out and find out how it works! The assembly is quite easy, requires no soldering, all cables are cut to length and ready to be plugged in. The assembly instructions are easy to follow and all texts are translated into 8 languages. All of this makes the kit very friendly to younger builders, too! 🙂

BUILT-IN SAFETY FEATURES

Original Prusa 3D printers are well-known for their reliability and safe operation. Every part of our printers is thoroughly tested in-house. The MK3S+ is equipped with three thermistors and comes with a custom-built high-quality Delta power supply. The printer can recognize issues with heating and stop operation to prevent damage.

OPEN-SOURCE AND COMMUNITY-FRIENDLY

All parts of our printer are open-source, which means we publish all source codes and blueprints online. The community around our products is huge and the feedback is overwhelmingly positive - don't believe us? Check out Facebook groups and YouTube videos! There's so much to do with your 3D printer - buying it is just the beginning!

READY FOR THE MULTI MATERIAL UPGRADE 2S

Multi Material Upgrade 2S is our unique add-on option for printing with up to 5 different filaments simultaneously. Multi-material could be your next step in the 3D printing world and the MK3S and MK3S+ are completely ready for the upgrade! MMU2S also allows you to print a soluble support interface - check out the video!

UPGRADABILITY

One of the most popular features of the Original Prusa i3 concept is upgradability. When you buy our 3D printer, you can upgrade it later to a newer version, so you don't need to buy a whole new model every two years like, for example, your phone or laptop. 🙂 We also keep supporting our 3D printers with regular firmware updates that bring new features!

Quality guaranteed by Josef Prusa & Prusa Research

International warranty and 60-day hassle-free returns

Prusa Research was founded by Josef Prusa, one of the core members of the open-source RepRap community, in 2012. Ever since, we’ve been developing and manufacturing 3D printers exclusively in our HQ in Prague, Czech Republic.

Over the years, we’ve sold more than 250.000 3D printers worldwide, receiving praise from both the media and 3D printing enthusiasts. Our machines and software still remain open-source and open to community-driven modifications.

However, we do much more than that: we also develop our own open-source slicing software PrusaSlicer, produce high-quality in-house-made filament called Prusament and run a constantly expanding community hub PrusaPrinters.org with a huge library of 3D models, contests, forums and more.

Our products received many awards worldwide and are covered by an international warranty with 60-day hassle-free returns (conditions apply).

Contact us

Want to ask us something? You can ask anything! 🙂

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