Table of contents



Introduction

  ....................................................................................................................................................2

I. Reprap Prusa i3 presentation
........................................................................................................................... 5

II. Bill of materials
................................................................................................................................................... 6
A. Printed Parts ............................................................................................................................................................ 6
B. Laser Cut Parts ........................................................................................................................................................ 6
C. Extruder .................................................................................................................................................................. 7
D. Smooth and threaded rods ........................................................................................................................................ 7
E. Mechanical parts ...................................................................................................................................................... 8
F. Heated bed .............................................................................................................................................................. 8
G. Electronics............................................................................................................................................................... 9
H. Screws, nuts and washers ......................................................................................................................................... 9

III. Mechanical assembly
....................................................................................................................................... 11
A. Y-axis assembly ....................................................................................................................................................... 11
1. Heated bed mount ........................................................................................................................................................ 11
2. Transverse parts ......................................................................................................................................................... 11
3. Assembly with the longitudinal parts ................................................................................................................................... 14
B. X-axis assembly ....................................................................................................................................................... 15
1. X End Idler & X End Motor ................................................................................................................................................ 15
2. X Carriage .................................................................................................................................................................. 17
3. X-Axis assembly .......................................................................................................................................................... 18
C. Connecting X-axis and Z-axis ...................................................................................................................................... 19
D. Motor assembly ........................................................................................................................................................ 20
1. Z-axis ...................................................................................................................................................................... 20
2. Y-axis ...................................................................................................................................................................... 21
3. X-axis ...................................................................................................................................................................... 22
E. Mechanical frame assembly ....................................................................................................................................... 23
F. X and Y-axis motions ................................................................................................................................................. 24
1. X-axis belt ................................................................................................................................................................. 24
2. Y-axis belt ................................................................................................................................................................. 24

IV. Heated bed assembly
..................................................................................................................................... 26
A. Thermistors assembly .............................................................................................................................................. 26
B. Heated bed assembly ............................................................................................................................................... 26

V. Extruder assembly
............................................................................................................................................ 28
A. Extruder assembly .................................................................................................................................................... 28
B. Connecting to X-axis ................................................................................................................................................. 30
C. Nozzle height adjustment .......................................................................................................................................... 32

VI. Electronics and wiring
..................................................................................................................................... 33
A. Mounting electronics ................................................................................................................................................. 33
B. Wiring .................................................................................................................................................................... 34
1. Endstop wiring ........................................................................................................................................................... 35
2. Motors wiring ............................................................................................................................................................. 35
3. Resistor and PCB heatbed wiring ..................................................................................................................................... 35
4. Thermistors wiring ...................................................................................................................................................... 35
5. Fans wiring .............................................................................................................................................................. 35
6. Power supply wiring .................................................................................................................................................... 36

Reprap Prusa i3 Build Manual (by 3dprinter.my)