So what’s the big deal about the Original Prusa i3 MK3? It’s pitched as a refinement of everything Prusa Research have achieved to date; more than a reliability upgrade, but a new and improved desktop 3D printer with some awesome new features.
Where the previous model offered astonishing print quality for the money, the Original Prusa i3 MK3 seeks to make the discipline of fused deposition modeling (FDM) more intuitive and easier than ever before, with a plethora of sensors to alert users to potential problems and prevent failed prints.
There’s a lot to cover, but to summarize those new features:
- Filament sensor
- Power Panic
- RPM sensing fans and Noctua
- Ambient thermistor and P.I.N.D.A 2 with thermistor
- EINSY RAMBo motherboard
- Trinamic2130 drivers with layer shift detection, faster and silent printing
- New Y axis
- Bondtech extruder
- Magnetic MK52 Heatbed
- Powder coated PEI spring steel print sheet
- Ready for OctoPrint
The Filament Sensor uses an optical filament encoder to detect the presence and movement of a filament. This provides early warning for when the filament is about to run out, and the machine can pause the print and prompt the user to insert a new spool. It can also detect stuck filament and recommend a “cold pull” to clean the nozzle and continue the print.
Other upgrades are Power Panic, where the MK3 can recover and resume a print-job after a power loss, and a new EINSY RAMBo motherboard which is pitched as the most advanced 3D printer board currently available. How advanced is it? It can monitor power, for one, which allows for the detection of blown fuses. For another, it features Trinamic drivers which are super fast, quiet, and can detect (and correct) layer shift while printing.
Elsewhere, the Original Prusa i3 MK3 has a reworked Y axis for improved frame rigidity and an extra 10mm build volume on the Z-height. And there’s an upgraded Bondtech drive gear extruder, which grips filament from both sides to increase the push force of the filament and making it more reliable (especially for flexible filaments).
But perhaps the biggest highlight of the MK3 is the new MK52 Magnetic HeatBed, which holds detachable alloy spring steel sheets powder coated with PEI. As the sheet cools down, parts can be popped off by simply flexing the sheet.
So! Without further ado, let’s move onto the unboxing and build, shall we?