The Original Prusa I3 MK3 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 powder coated PEI spring steel print sheet we believe that we've developed our best 3D printer yet!
This is a fully assembled printer. If you're looking for DIY KIT, you can find it here.
JUST ANNOUNCED! PREORDER! We expect to start shipping in November!
Warning: Last items in stock!
The Original Prusa I3 MK3 is the successor of the award-winning Original Prusa i3 MK2 3D printer. Our previous model is the winner of "3D PRINTER SHOOTOUT 2017" in prestigious MAKE: Magazine and for almost a year it's the best 3D printer according to 3Dhubs.com. But the new MK3 is even better! With the rebuilt extruder, a plethora of sensors and the new magnetic MK52 heatbed with replaceable powder coated PEI spring steel print sheet we believe that we've developed our best 3D printer ever!
The most significant new features of Original Prusa i3 MK3
Our optical filament encoder detects not only the presence of a filament but also its movement. This means we can recognize running out of the filament, pause the print and ask the user to insert a new spool. We can also detect stuck filament and offer the user a cold pull to clean the nozzle and continue the print.
MK3 has two new thermistors. The first one is measuring ambient temperature on the electronics and helps us to detect board or connector failures. The second one is embedded in the P.I.N.D.A. 2 probe, and it allows us to compensate temperature drift, so the first layer will always be spot on!
Did you ever accidentally tripped over your extension cord and lost a 20-hour print? MK3 will save you! The printer can fully recover from the loss of power. A special sensor detects power interruption and immediately shuts down the heatbed and extruder heating.
To increase the reliability of the printer, we have added sensors to the cooling fans. In the case of an extruder cooling getting stuck with a piece of filament, both fans can now measure RPMs and notify a user about the problem. And one more thing - the nozzle cooling fan is now made by Noctua and it's super silent!
We co-developed the new EINSY (named after Einstein) RAMBo motherboard together with Ultimachine, and we believe, it is the most advanced 3D printer board out there. It still has many tricks up its sleeve. A neat trick is the monitoring of power. This enables us to detect blown fuses.
Trinamic2130 drivers with 256 microstepping are extremely quiet. At least in silent mode. In normal mode, which is still quieter than 99% of the available printers, they can also detect lost steps. This has significant implications. The printer can detect shifted layers, rehome and continue the print without a problem!
The most requested feature was an improved frame rigidity. We are now 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.
The new MK52 Magnetic HeatBed has embedded high curie temperature magnets inside. These hold replaceable alloy spring steel sheets powder coated with PEI. PEI is directly on metal, so when you crash the nozzle into it, metal can dissipate the heat and prevent the surface damage.
The extruder is now upgraded to a genuine Bondtech drive gear. It grips the filament from both sides, increasing the push force of the filament and making it more reliable, especially for flexible filaments. When we are at the extruder, the print cooling fan now cools part from two sides, increasing the overhang performance.
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