Introducing the Original Prusa Enclosure: Modular box with advanced features for your MK3S+!

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Original Prusa i3 MK3S+ kit

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 made various useful design tweaks.

The kit includes one Smooth PEI Sheet and a free 1kg filament spool of Silver PLA!

Alternatively, you can buy an assembled printer with a complete warranty and a free online course.

Original Prusa i3 MK3S+ 3D printer

Leadtime 3–4 weeks
$999Detail

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

Main Features

SuperPinda Probe

SuperPINDA probe features a hiqh-quality sensor for a fully-automatic Mesh Bed Leveling process. Before every print, the printer 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.

Removable Print Sheets

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

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.

Power Loss Recovery

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

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.

Mesh Bed Leveling

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.

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 advanced support generation, 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 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.

Open-source Hardware & Firmware

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!

Technical Parameters

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, PVB, 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
Printer dimensions (without spool) 7 kg, 50×55×40 cm; 19.6×21.6×15.7 in (X×Y×Z)
Power consumption PLA settings: 80W / ABS settings: 120W

* Consumable parts, such as PEI sheets (smooth, textured, etc.) are not covered by warranty as the coatings are designed to diminish over time unless failure has occurred due to a defect in materials or workmanship. Cosmetic damage, including but not limited to scratches, dents, cracks, or other cosmetic damage is also not covered by the warranty. Only defective sheets on arrival are covered by warranty.

Full Features List (May 2022 Edition)

  • 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

Awards & Press Reviews

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."

      6 reasons to buy the MK3S+

      1

      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!

      2

      Open-source and Community Friendly

      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.

      3

      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.

      4

      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!

      5

      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!

      6

      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!

      Best assembly instructions and free 3D Printing handbook

      We didn't want to leave anything to chance, so our assembly instructions are pictured to the smallest detail.

      See the assembly manual for yourself!

      All fasteners and mechanical parts have 1:1 drawing so you can easily find them, and there is no chance of you picking a wrong one. You don't have to be MIT graduate to assemble our kit ;-)

      Our fastest customer built the kit in 4 hours! Will you beat him?



      Ready to print settings

      We provide high print settings with the printer, so you don't have to dive into complex new programs the second you finish the build. You can start printing right away, and this gives you a great head start!

      These settings are great for all kinds of objects, not just for a couple of prepared showpieces. After a while, when you're familiar with the printer, you can, of course, dive into tinkering ;-)

      We are developing our own slicing software. PrusaSlicer is a feature-rich, frequently updated tool that contains everything you need to export the perfect print files for your Original Prusa 3D printer. But of course, we also have the settings for the third party slicers like Simplify3D, Cura, etc.



      MK3S+ vs MINI+ Comparison
        Original Prusa i3 MK3S+ Original Prusa MINI+

      Build volume

      250 x 210 x 210 mm | 9.84 x 8.3 x 8.3 in 180 x 180 x 180 mm | 7 x 7 x 7 in

      Layer height

      0.05 – 0.35 mm 0.05 – 0.25 mm with 0.4 mm nozzle

      Max travel speed

      200+ mm/s 200+ mm/s

      Max hotend/heatbed temp.

      300 °C / 120 °C (572 °F / 248 °F)

      280 °C / 100 °C (536 °F / 212 °F)

      Mainboard

      Einsy RAMBo 8-bit board with Trinamic 2130 drivers co-developed with Ultimachine

      Custom 32-bit Buddy electronics with STM32 and latest Trinamic 2209 silent stepper drivers

      MMU2S support

      Yes

      No

      Extruder

      Direct drive

      Bowden system with 3:1 gearing

      LCD screen

      Monochromatic LCD

      2.8″ graphic 65k color screen

      Print surface

      magnetic heatbed with removable PEI spring steel sheets

      magnetic heatbed with removable PEI spring steel sheets

      Filament diameter

      1.75mm

      1.75mm

      Number of materials (simultaneously)

      1 1

      Nozzle diameter

      0.4mm (default) / other nozzle diameters supported

      0.4mm (default) / other nozzle diameters supported

      Supported materials

      Any thermoplastic including Nylon and Polycarbonate

      Most thermoplastics except Carbon filled

      Filament sensor

      Yes (IR)

      Optional upgrade

      Power panic

      Hardware-based, single G-code line accuracy

      Future software upgrade, single layer accuracy

      Ethernet connection

      Via Raspberry Pi

      Yes

      Wi-Fi connection

      Via Raspberry Pi

      Separate future upgrade (ESP Wi-Fi module)

      Advanced sensors

      3 thermistors + SuperPINDA, fan RPM sensors

      3 thermistors + SuperPINDA, fan RPM sensors

      Farm mode

      No

      Yes (upcoming feature)

      Calibration

      Automatic, Mesh Bed Leveling

      Automatic, Mesh Bed Leveling

      Print medium

      SD card

      USB drive / LAN

      Firmware update interface

      USB port

      USB drive / LAN

      Power supply

      240W, custom made by Delta with Power Panic HW

      160W, external adapter by Mean Well or Delta depending on the region

      Kit price

      749 USD / 769 EUR (VAT incl.) 349 USD / 379 EUR (VAT incl.)

      Assembled printer price

      999 USD / 999 EUR (VAT incl.)

      399 USD / 419 EUR (VAT incl.)

      Reviews

      168 reviews
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      Clark Dave16 days ago

      Prusa did a nice job engineering this 3d printer. I purchased the kit to assemble to become more familiar with the design; however, planned future purchases of this printer will be fully assembled to save time. Prusa online chat support is excellent to verify operational instructions and to answer questions. The techs reviewed uploaded pics and YT videos via sent hyperlinks. I have nothing negative to say or suggestions to make. 100% satisfied.

      overbeck wayne25 days ago

      Received the kit 24 months ago and have been happily printing ever since. took me 12 hours to very carefully assemble. I use glue stick quite often as many parts I print have a very small footprint. I have discovered that it I wet the build plate(off the machine) to dilute the old glue stick and then let it dry(preheat) It leaves an almost invisable coating that works killer but easily releases with no evidence of using glue stick

      Elliott Marklast month

      I've had my Prusa i3 MK3S+ (Kit) for a little over a year now. I'm a 72 year-old retired Engineer, and the assembly was straight-forward and easy. I DID take 1-1/2 days assembling it, going over everything two or three times before doing something. But it was worth it, the machine fired right up the first time, with no problems. Since then, I have printed hundreds, maybe thousands of all sorts of things, out of ABS, TPU, PETG, PLA, and Polycarbonate. The machine has performed perfectly. It now has over 6000 printing hours, and has printed over 46 spools of filament. Yes, some parts have died, which is to be expected; I replaced the LCD screen and the hot end, and a dozen or so nozzles. But, that's why I bought this printer; it is easy to buy parts for, and easy to repair. I DO keep it clean, and all printing is done inside an IKEA Lack enclosure I made using PRUSA gcode files for the 'hardware'. I also keep it lubricated, applying a little silicon grease to the rods as needed. I researched for over 6 months to decide which printer to get. After a year, I am 100% confident that I made the right choice. This is the perfect printer to start 3D printing, which is UNBELIEVABLY FUN!!! GREAT printer!

      $749
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