DIY 3D Printer: The ultimate guide to building your own Prusa i3 Mk2 style 3D printer.
All the required parts to build your own 3D printer is available at Leobot Electronics (www.leobot.net).
Materials Needed
Electronics
- 100K BTC with cable Heated bed temperature sensor x1
https://leobot.net/viewproduct.aspx?id=5002 - 12V 20A power supply Power supply x1
https://leobot.net/viewproduct.aspx?id=5135 - A4988 driver Stepper motor drivers x4
https://leobot.net/viewproduct.aspx?id=5019 - Arduino Mega 2560 clone Mainboard xx1
https://leobot.net/viewproduct.aspx?id=2840 - Mechanical endstop boards Endstops 2
https://leobot.net/viewproduct.aspx?id=3067 - RAMPS 1.4 Mainboard x1
https://leobot.net/viewproduct.aspx?id=5003 - Reprap 14pcs wire set Wiring x1
https://leobot.net/viewproduct.aspx?id=5096 - Reprap heated bed aluminum Heated bed x1
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Optional parts
- IEC socket & Switch Power input x1
https://leobot.net/viewproduct.aspx?id=5006 - LCD Controller, character-based version LCD and SD card reader x1
https://leobot.net/viewproduct.aspx?id=5062 - LCD Controller, graphical version LCD and SD card reader x1
https://leobot.net/viewproduct.aspx?id=5004
Extruder Assembly
- 2mm Extruder springs (pack of 10) Extruder springs x1
https://leobot.net/viewproduct.aspx?id=5073 - 2x4mm bowden tube Hotend-extruder liner x1
https://leobot.net/viewproduct.aspx?id=5102 - 50mm radial fan Part cooling fan x1
https://leobot.net/viewproduct.aspx?id=5001 - 5V M8 inductive sensor Z probe 1
----- - 625 bearing Extruder idler bearing x1
https://leobot.net/viewproduct.aspx?id=4998 - E3D v6 Jhead with fan and thermistor Hotend x1
https://leobot.net/viewproduct.aspx?id=5079 - Hobbed gear Filament drive gear x1
https://leobot.net/viewproduct.aspx?id=4194
Frame and motion
Frame and fasteners
- Pruas i3 MK2 Frame x1
https://leobot.net/AdminProductDetail.aspx?id=5142 - 5x100mm zip ties x 100
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3D printed parts
- M10 fender washer (DIN9021) x4
https://leobot.net/viewproduct.aspx?id=5127 - M10 nut (DIN934) alternatively slim nuts for aesthetics x14
https://leobot.net/viewproduct.aspx?id=5122 - M10 threaded rod (DIN976) x2 x 360mm
https://leobot.net/viewproduct.aspx?id=5137 - M10 washer (DIN125) Can be replaced by fender washers with new printed part x8
https://leobot.net/viewproduct.aspx?id=5129 - M3 fender washer (DIN9021) x30
https://leobot.net/viewproduct.aspx?id=5125 - M3 nut (DIN934) x42
https://leobot.net/viewproduct.aspx?id=4391 - M3 nyloc nut (DIN985) Locknut, alternatively jam two regular nuts or use threadlock x4
https://leobot.net/viewproduct.aspx?id=5124 - M3 square nut slim (DIN562) x6
https://leobot.net/viewproduct.aspx?id=5123 - M3 washer (DIN125) x22
https://leobot.net/viewproduct.aspx?id=5125 - M3x10 cap-head screw (DIN912) x16
https://leobot.net/viewproduct.aspx?id=5115 - M3x18 cap-head screw (DIN912) x18
https://leobot.net/viewproduct.aspx?id=5116 - M3x20 cap-head screw (DIN912) x7
https://leobot.net/viewproduct.aspx?id=5117 - M3x30 cap-head screw (DIN912) x21
https://leobot.net/viewproduct.aspx?id=5118 - M3x40 cap-head screw (DIN912) x3
https://leobot.net/viewproduct.aspx?id=5119 - M5 nut (DIN934) x2
https://leobot.net/viewproduct.aspx?id=5120 - M5 threaded rod (DIN976) x2 x350mm
https://leobot.net/viewproduct.aspx?id=5140 - M8 nut (DIN934) alternatively slim nuts for aesthetics x22
https://leobot.net/viewproduct.aspx?id=5121 - M8 threaded rod (DIN976) x4 x205mm
https://leobot.net/viewproduct.aspx?id=5139 - M8 washer (DIN125) x22
https://leobot.net/viewproduct.aspx?id=5126
Linear motion
- 5x5mm flexible coupler Z-axis coupler x2
https://leobot.net/viewproduct.aspx?id=5078 - 8mm smooth rods, 320m, 330 or 350mm, 370mm X, Y Z linear guide 2 each side x4
https://leobot.net/viewproduct.aspx?id=5141 - GT2-2M 16T idler pulley, 3mm bore X, Y belt idlers x2
https://leobot.net/viewproduct.aspx?id=5074 - GT2-2M 16T pulleys, 5mm bore (set with belt) X, Y belt pulleys x2
https://leobot.net/viewproduct.aspx?id=5072 - GT2-2M 6mm belt (often just called "GT2") (set with pulleys) X, Y belt x2meter
https://leobot.net/viewproduct.aspx?id=5070 - LM8UU bearings X, Y, Z linear bearings x10 https://leobot.net/viewproduct.aspx?id=5075
- NEMA17 stepper motor X, Y, Z (x2), E stepper motors x5
https://leobot.net/viewproduct.aspx?id=1618
3D Printed parts
Download here: http://www.leobot.net/MK2-printed-parts.zip
- extruder-body.stl x1
- extruder-cover.stl x1
- extruder-idler.stl print modified design x1
- fan-nozzle.stl x1
- x-carriage.stl x1
- x-end-idler.stl x1
- x-end-motor.stl print modified design x1
- y-belt-holder.stl x1
- y-corners.stl x2 for 350mm Y smooth rods, x4 for 330mm Y smooth rods
- Y-distance.stl x1
- y-idler.stl x1
- y-motor.stl print modified design
- z-axis-bottom.stl x1
- z-axis-top.stl x1
Modified parts
- extruder-idler (simplified) x1.STL x1
- x-end-motor (new endstops) x1.stl x1
- y-corners (open) x2.STL 2, for 350mm smooth rods 0, for 330mm smooth rods
- y-motor (new endstops) x1.STL x1
- Z-nut holdah x4.stl x4
Optional parts
- LCD-cable-clip.stl x10
- LCD-knob.stl x1
- stl x1
- stl x1
- stl x1
- stl x1
Software
Marlin - Dowload available here http://www.leobot.net/DollyMarlin.zip
Build Steps
- Print 3D Parts
- Assemble Frame
- Assemble Y-Axis
- Assemble X-Axis
- Assemble Z-Axis
- Assemble Extruder
- Assemble Power Supply
- Assemble Heatbed
- Assemble Electronics
Detailed Build Manual available at https://help.prusa3d.com/en/guide/1-introduction_79768
