Mini Mill CNC Conversion Plans

These Mini Mill CNC Conversion plans were created by Ronald J. Steele.

This is a complete set of plans to add CNC to a mini mill. These CNC mill conversion plans include a materials list with sources, plans for all the parts, and instructions for making the parts and installing them on the mini mill.

The only permanent change made to the mini mill is to drill and tap two holes.

Ron Steele says the cost of the hardware and materials, assuming you need to purchase everything, is about $160. The plans provide sources for all these items. The plans also provide several sources for the electrical parts and software. One kit includes software, 145 oz/in stepper motors, and a pre-wired boxed controller and sells for $645. It takes between 20 and 30 hours to machine the parts and bolt it all together.