2023-Feb

Building The IndyMill (Shopping List)

2023 is the year I build this machine! This is a space for me to keep track and potentially help other people! I bought Nikodem‘s build instructions and will follow them along with his videos. Often I cant remember the name of some part and just need a reference, additionally these parts are expensive so as I buy the parts the list below helps me keep track. Most of these parts from aliexpress.com are generics but for a home (none commercial) project its fine.

XYZ Axis - Cartesian Coordinate System

Electronics

Part	Details
	TB6600 stepper drivers Default microstep value is 8 https://www.aliexpress.com/item/4000237610563.html
	Nema23 stepper motors with 8mm shaft and a step angle of 1.8 degrees https://www.aliexpress.com/item/32996003992.html
	500 Watt Spindle Collets to change the size of the accepted bit Powers supply for the spindle with potentiometer (controls rotation speed) https://www.aliexpress.com/item/4000182313184.html
	IndyShield – CNC Arduino Shield designed by Nikodem https://indystry.cc/product/indyshield-cnc-arduino-shield/

3D Printed Parts

PLA at 40%, you can buy them from Nikodem at https://indystry.cc/product/indymill-3d-printed-parts/. He also provided them as a free download if you want to print yourself https://indystry.cc/wp-content/uploads/2021/08/IndyMill-STL.zip

Part	Details
	6000 holder.stl
	Ball screw block X axis flap.stl
	Ball screw block X axis.stl
	Ball screw block Y axis flap.stl
	Ball screw block Y axis.stl
	X axis nut holder.stl
	Y axis nut holder left.stl & Y axis nut holder right.stl
	Z axis bearing holder.stl
	Z axis nut holder.stl

Mechanical

Part	Details
	Aluminium profiles (20×40x600,20×40x666,20×80x600mm) https://autoline.nz/product-category/aluminium-t-slot-extrusion/2-series/
	Trapezoidal Lead Screw 220 mm (8mm lead) I bought the 800mm and down to 220mm https://www.aliexpress.com/item/32507277503.html
	Liner rail block MGN12H https://www.aliexpress.com/item/4001241652307.html The difference between MGN12C and MGN12H is the preload and size. MGN12C block is 27mm by 34.7mm with holes 15mm and 20mm appart. MGN12H block is 27mm by 45.4 so its wider and with holes 20mm by 20mm appart. MGN12H a better choice for applications where precision is critical, such as CNC machines. However, the MGN12H is also more expensive than the MGN12C. MGN12C is a good choice for applications where precision is not critical, such as 3D printers. The more expensive `Hiwin` MGN12H blocks have a pre-load rating if Z0 (no preload at all)
	Linear Rail MGN12 600mm https://www.aliexpress.com/item/4000358062170.html
	Linear Rail MGN12 650mm https://www.aliexpress.com/item/4000358062170.html
	Linear Rail MGN12 200mm https://www.aliexpress.com/item/4000825505166.html

Plates

These plates can be laser cut from 8mm Mild Steel or water cut from 8mm Aluminium 5083 however I went with steel for rigidity and I think the weight will be helpful.

You can buy the plates from Nikodem at https://indystry.cc/product/indymill-bare-steel-plates-kit/ or you can have them cut in your own country by downloading the the files and sending them to a cutting workshop https://indystry.cc/wp-content/uploads/2020/08/IndyMill-DXF.zip

The X and Z axis supports:

Part	Details
	Z Axis Motor Support. Size 78.14 x 124.97
	X Axis. Size 120.00 x 200.00
	Z Axis Rail Support 1 and 2. Size 12.00 x 200.00
	500W Spindle Plate Z Axis. Size 135.00 x 86.00