The Original Prusa i3 MK3S+ is the latest version of our award-winning 3D printers. The MK3S has been upgraded with a brand new SuperPINDA probe for improved first layer calibration, added high-quality 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  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 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!

Quality Bearings & more

The MK3S+ features a new set of metal clips for the high-quality 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!

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