Prusa i3 MK3S – 3D Printer

The Original Prusa I3 MK3S is the successor of the award-winning Original Prusa i3 MK2 3D printer. With the rebuilt extruder, a plethora of sensors and the new magnetic MK52 heatbed with replaceable PEI spring steel print sheet, etc.

This listing is a DIY KIT for self-assembly. 

The original prusa i3 MK3S is the “best 3d printer” according to all3dp.com and make: magazine, where MK3S also received “editor’s choice” as the highest-rated 3d printer in 2019 digital fabrication guide. The MK3S features a rebuilt extruder, numerous sensors, and various smart features. Plus, a new magnetic MK52 heatbed with replaceable PEI spring steel print sheet. Dozens of various tweaks and upgrades improve the reliability and ease of use.

Mk3S‘s functionality can be further expended with the unique multi-material upgrade 2.0 addon for printing with up to 5 materials simultaneously.

Most significant new features of original prusa i3 MK3S

• REMOVABLE HEATBED

The new MK52 Magnetic HeatBed holds replaceable alloy spring steel sheet with PEI surface. You can choose between two types of sheets – smooth PEI sheet (default option, already available) and textured powder coated PEI (this will be available later).

• FRAME STABILITY

With the MK3S we are introducing the reworked Y axis from aluminum extrusion. It provides the same rigidity as some other printers while providing the sleek look of our milled Dural frame. The frame is also optimized to add 10 mm of Z height totaling at 210 mm.

• SILENT & FASTER PRINTING

Thanks to the new Trinamic2130 drivers and Noctua fan, MK3S is extremely quiet in the stealth mode. But also in normal mode is the printer quieter than 99 % of the available printers. In normal mode, we have also increased the printing speed. Now you can achieve more than 200 mm/s!

• POWER PANIC

Did you ever tripped over the extension cord and lost a 20-hours print? MK3S will save you! The printer can fully recover from the loss of power. It detects power interruption and shuts down the heatbed and extruder heating. After restoring the power, you can continue with printing.

• FILAMENT SENSOR

With MK3S we are introducing a completely reworked extruder with a new filament sensor. The new sensor is using the optical sensor which is triggered by a simple mechanical lever. This sensor doesn’t care about the optical properties of the filament (it can be completely invisible) and cannot die because of mechanical wear.

• RECOVER SHIFTED LAYERS

The new EINSY RAMBo motherboard with Trinamic drivers not only makes the MK3S silent but it also can detect skipped steps and layer shifting. This is a big step forward for the reliability of the printer and the user comfort. You can say goodbye to ugly prints!

• BONDTECH EXTRUDER

The extruder is now upgraded to Bondtech drive gear. It grips the filament from both sides, increasing the push force and making the printer more reliable, especially for flexible filaments. Also, the print cooling fan now cools part from two sides, increasing the overall performance.

• P.I.N.D.A. 2 PROBE

MK3S has two new thermistors. The first one measures ambient temperature on the electronics, preventing MINTEMP errors in rooms with 15°C or less. The second one is embedded in the new PINDA 2 probe to compensate temperature drift. So the first layer will always be spot on!

• E3D V6 NOZZLE

E3D V6 is market-leading all metal hotend well known for its high-temperature performance. MK3S uses a customheatbreak developed together with E3D. It has proven well its reliability in our Multi Material upgrade and continues to deliver great performance in surprisingly small form factor.