Detailed Plans to convert a Sieg built Mini-Mill toCNC
MINI-MILL CNC CONVERSION PLANS - $49.95
X & Y AXIS BALL SCREW RETROFIT PLANS FOR CNC'ED MINI-MILLS
XY BALL SCREW PLANS ARE $10.00
The plans are for converting the SIEG company's X2 Mini-Mill to CNC
Sieg built Mini-Mills are sold by the following tool distributors:
Harbor Freight model #44991
Grizzly Tool model #G8689
Homier model #3947
Micro Mark model #82573
Cummins model #7877
Plans are in convenient booklet form and have 27 pages of drawings, instructions and pictures.
Front view of converted mill. Note the clear plastic guard protecting the Z axis lead screw above the mill head.
Left view of mill head and Z axis. Note that the counter balance lever is retained after conversion.
Right view of mill head and the Z axis. Note that all manual axis components are retained and are fully functional.
Include detail and assembly drawings, photographs and instructions. Also source suggestions for bearings, hardware, materials and electronics hardware and software.
All required machined parts can be machined right on the manual mill prior to it's conversion to CNC.
A well designed conversion plan that will guide you through automating a Sieg Industrial built Mini-Mill. This is a solid iron milling machine. A perfect machine for engineering prototype work or home shop hobby machinist.
Advantages of using my plans:
1. A machine modified according to these plans will have complete 3 axis CNC capability while retaining full use of all 3 axis manual function.
2. Z axis lead screw is located out of the way of the milling work area above the mill head away from chips and dirt.
3. Plenty of room around the stepper motors allow use of nema 23 or the larger nema 34 frame steppers.
4. No major disassembly of mill is required during the addition of the CNC hardware which makes the conversion quick and easy.
5. The only permanent change to the Mini-Mill required for the conversion is the addition of two tapped holes added to the mill head.
6. All machined parts can be made right on your Mini-Mill prior to its conversion to CNC.
7. Cost of required aluminum stock, lead screw and other hardware will be between $190 and $350 depending on the type of lead screw and motor size selected by the builder.