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CNC

Overview

To obtain some form of accuracy when manufacturing components for the simulator, there is only one tool to turn to.  A Computer Numeric Control (CNC) Router.  So that was what I ended up building to help me with this project.  The design is a mix between a Rockliff Model A and the free online 'jgro' CNC.  And of course some of my own ideas.


 

Components

My CNC system mainly consists of the following components:
  • Base that holds the Y-axis
  • Gantry that holds the X- and Z-axis
  • Stepper motors for all three axises
  • Limit switches
  • Emergency Stop (EStop) button
  • PC with the controller software - Mach3
  • Controller card
  • Power supply
  • Spindle motor
  • Various tool tips
  • Safety gear such as safety goggles and an ear cover
 

Controller Card

The controller card used is a Hobby CNC Pro Chopper Driver (3-axis) card.  The option exist to upgrade it to a 4-axis card.  This card was purchased in a kit so I had to solder each component myself.
 
 
 

Spindle Motor

After first using a 135W spindle motor, I upgraded to a Kress 800W spindle motor.  It comes with a 8mm collet so I had to purchase a 3mm and 6mm collet.  This enables me to use Dremel and Wood Router tooltips. The spindle and accessories were purchased from CNC-Plus in Germany.

Photos

Thanks

I would like to thanks the following 2 persons who helped a lot during the building of the CNC:
  • Johan Enslin
    (Who helped me with the shipping of the stepper motors and the controller card - when the vendor did not ship to Namibia)
  • Per Erik
    (Who answered some questions regarding the CNC and who's own website CNC section made my choices easier)