CP&M TOC

 

This is the table of contents from our Comprehensive Plans & Manual:

Table of Contents  
Introduction .................................................................................................................................................. 6 
What is a CNC Machine ? .......................................................................................................................... 6 
What is a DIY Desktop CNC Machine ? ..................................................................................................... 7 
Specifications ............................................................................................................................................ 8 
Overall Dimensions ............................................................................................................................... 8 
Working Area Dimensions (metal base version) ................................................................................... 9 
Precision .............................................................................................................................................. 10 
Speed .................................................................................................................................................. 10 
Power Requirements .......................................................................................................................... 10 
MyDIYCNC Standard Spindle Specifications........................................................................................ 10 
Possibilities .............................................................................................................................................. 11 
Limitations .............................................................................................................................................. 11 
Build Tools Required ............................................................................................................................... 12 
Chassis Build ........................................................................................................................................ 12 
Electronics Build .................................................................................................................................. 12 
Terms and Conditions ............................................................................................................................. 13 
Products, Content and Specifications ................................................................................................. 13 
Accuracy of Information ..................................................................................................................... 13 
Use of this document .......................................................................................................................... 13 
DISCLAIMERS ....................................................................................................................................... 14 
Plans ........................................................................................................................................................ 15 
Exploded Views ................................................................................................................................... 15 
Chassis Frame ...................................................................................................................................... 16 
Steel and Aluminum ............................................................................................................................ 17 
  
Wood ................................................................................................................................................... 21 
Uprights and Gantry Brace .................................................................................................................. 22 
Bearings Sub Frames ........................................................................................................................... 25 
Motors, Couplings, Rods and Screws .................................................................................................. 30 
Anti-backlash Lead Nuts ...................................................................................................................... 33 
X Table ................................................................................................................................................. 35 
Y Carriage ............................................................................................................................................ 36 
Z Carriage ............................................................................................................................................ 38 
Z Motor Mount ................................................................................................................................... 39 
Spindle Mount ..................................................................................................................................... 42 
Wiring Diagrams .................................................................................................................................. 43 
Hardware ............................................................................................................................................ 45 
Electronics ........................................................................................................................................... 46 
Stepper Controller Module ................................................................................................................. 46 
Spindle Controller Module .................................................................................................................. 49 
Creating your Parts ................................................................................................................................. 51 
Notes on Precision Cutting and Drilling .............................................................................................. 51 
Rods and Bearings. .............................................................................................................................. 51 
Position of Axes in Relation to Each Other ......................................................................................... 53 
Building your DIY Desktop CNC Machine .................................................................................................... 56 
Chassis Frame.......................................................................................................................................... 57 
Cutting and Preparing Rods and Lead Screws ........................................................................................ 60 
Gantry Support Uprights and Brace ........................................................................................................ 60 
X Rods, Bearings and Table ..................................................................................................................... 62 
Gantry and Carriages .......................................................................................................................... 64 
Y-Z Assembly ....................................................................................................................................... 64 
Axes Drivetrains ...................................................................................................................................... 67 
Motor Couplings ................................................................................................................................. 67 
Drivetrain Assembly ............................................................................................................................ 68 
  
Stepper Motor Mounting .................................................................................................................... 70 
Test Your Axes ..................................................................................................................................... 71 
Power Supply and Enclosure ................................................................................................................... 71 
Modifying and Preparing your Power Supply ..................................................................................... 71 
Mod for non-PC operation .................................................................................................................. 72 
Selecting the Required Power Feeds .................................................................................................. 72 
Attaching the Electronics Enclosure (optional) ................................................................................... 73 
Wiring Motors and Limit Switches .......................................................................................................... 75 
Stepper Motor Wiring ......................................................................................................................... 75 
Limit Switches (optional)..................................................................................................................... 75 
Electronics Wiring ................................................................................................................................... 78 
Connecting a DB-25 male Connector .................................................................................................. 78 
Wiring the PC Parallel Port Connector ................................................................................................ 79 
Power Connections ................................................................................................................................. 80 
Configuring your PC and CNC app ............................................................................................................... 81 
General Setup ......................................................................................................................................... 82 
DIY Desktop CNC Machine Software Configuration Parameters: ....................................................... 82 
KCam (Windows XP/98) .......................................................................................................................... 83 
EMC2 (Linux) ........................................................................................................................................... 89 
Other CNC Applications (Mach3, TurboCNC, etc.) ................................................................................ 100 
Expanding Your DIY Desktop CNC Machine .............................................................................................. 101 
Workspace Dimensions ......................................................................................................................... 101 
Table Travel Mod .............................................................................................................................. 101 
Spindle Upgrades .................................................................................................................................. 102 
Stepper Motor Upgrades ...................................................................................................................... 103 
Larger Stepper Motors ...................................................................................................................... 103 
Salvaged and Recycled Stepper Motors ............................................................................................ 104 
Electronics Upgrades ............................................................................................................................ 107 
  
The Spindle Control Module ............................................................................................................. 107 
Alternate Stepper Motor Drivers ...................................................................................................... 109 
Future MyDIYCNC Developments ..................................................................................................... 109 
Getting Support ......................................................................................................................................... 110 
Your MyDIYCNC account ....................................................................................................................... 110 
The MyDIYCNC Online Forum ........................................................................................................... 110 
Troubleshooting .................................................................................................................................... 110 
Appendices ................................................................................................................................................ 121 
DIY Desktop CNC Machine Master Bill of Materials ............................................................................. 121 
MyDIYCNC Stepper Driver Module Bill of Materials ............................................................................. 125 
MyDIYCNC Spindle Control Module Bill of Materials ........................................................................... 126 
MyDIYCNC Stepper Motor Signal Exerciser .......................................................................................... 126 
Wiring Diagram ..................................................................................................................................... 127 
DIY Desktop CNC Machine Wiring Diagram color codes................................................................... 128 
Stepper Motor Mount Holes (NEMA 17) .............................................................................................. 129 
INDEX ........................................................................................................................................................ 130 

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