Bill of materials

This BOM is meant for MK2Clone r1. If you are looking for BOM for MK2Clone r2, go to the GitHub page, where you will find it.

Printed plastic parts

You can find all the stl’s on github: https://github.com/q3ok/Prusa-i3-MK2-Clone/tree/r1/Printed-Parts

4x Y-corner (instead of that parts, you can grab a corner replacements)
1x Y-belt-holder
1x Y-motor-holder (not needed if you will use corner replacements)
1x Y-idler
(optional) 1x Y-motor-distance (not needed if you will use corner replacements)
1x LCD-cover-notORIGINAL
1x LCD-knob
1x lcd-support-A
1x lcd-support-B
1x X-carriage
1x X-end-motor by dulouie
1x X-end-idler by dulouie
1x Z-axis-top (L+R)
1x Z-axis-bottom (L+R)
4x arduino-washer
1x Modified Extruder body by HeartFoxx
1x Modified Extruder idler by HeartFoxx
1x Extruder cover
1x Fan nozzle
1x Cable holder

Metal parts

2x Threaded rod M10x380 (property class 8.8 or higher)
4x Threaded rod M8x210 (property class 8.8 or higher)
2x linear shaft Φ8 370mm (hardened steel, HRC >60, tolerance 8h6)
2x linear shaft Φ8 350mm (hardened steel, HRC >60, tolerance 8h6)
2x linear shaft Φ8 320mm (hardened steel, HRC >60, tolerance 8h6)
10x ball bearing LM8UU
12x M10 nut
12x M10 washer
16x M8 nut
16x M8 washer
3x M3 self-locking nut
27x M3 nut
6x M3 washer
4x M3x40 screw
7x M3x30 screw
2x M3x25 screw
3x M3x20 screw
24x M3x18 screw
6x M3x12 screw
16x M3x10 screw
2x GT2 20T bore 3mm idley pulley
2x GT2-16 pulley
1x MK8 pulley
1x 625ZZ or 625 2RS bearing
6x Spring dia. ~4,8mm, length 8mm – aliexpress

Electronics

1x Power Supply 12V/240W – aliexpress (can be cheaper in local electric store)
1x 2×2,5mm ~2m cable
1x power cable (eg. IEC C13, according to your local socket standard)
3x NEMA17 stepper motor with cables and ramps connector – aliexpress
2x NEMA17 stepper motor with integrated trapezoidal screw Tr8x8 with cables and ramps connector – aliexpress
2x Microswitch – aliexpress
1x LJ8A3-2-Z/BX-5V sensor
2x 2×0,5mm ~1m cable (for microswitches)
3x 3pin ramps connector (2x for microswitches, 1x for Z probe)
1x Arduino Mega 2560
1x RAMPS 1.4
4x A4988 motor driver (or 2x TMC2100 for X and Y and 2x A4988 for Z and E)
1x RepRap Discount Smart Controller LCD 2004
2x 70cm IDC 10 pin cable
1x 5015 turbine fan + 2×0,5mm ~1m cable
1x 30x30x10 fan + 2×0,5mm ~1m cable
1x 215×215 MK3 aluminium heatbed with cables and thermistor – aliexpress

Other

1x Prusa i3 vanilla frame (plywood: at least 9 mm thickness, or aluminium: 6mm, recommended with side supports, mounting holes for Arduino MEGA and in case of aluminium – holes for mounting power supply)
1x Chinese E3D Bowden Hotend v6 with thermistor and heater (or more expensive: Original E3D v6 Lite or Full hotend)
1x PTFE tube 4/2mm (< 10cm)
2x GT2 belt
1x Adhesive sticker
(at least) 12x zipties
(optional) 4x felt pad
(optional) 1x nylon filament dia 3mm, 50cm length
(optional) 1x spiral wrap
(optional) 1x yoga mat

Tools needed

soldering iron
small pliers
flatheat screwdriver (~3,6mm)
hex keys (depending on what screws are you using)
13/17mm spanners
scissors (recommended for metal cutting)
(optional) power drill and 3mm drill bit

The overall cost of all the needed items (excluding tools and printed parts) is around $200 (its less than 30% of Original Prusa i3 MK2 price, however it depends how cheap you will find the printed parts, and if you already had the needed tools)

Printed parts done from ABS with layer height 0.2mm should cost around $50, depending on how expensive 3D services are near you place. You can also use PET-G for the parts. PLA are not recommended for the extruder parts, but can do the work too.