Homemade ballmill

ballmill made of cheapest material

BOM

BL4825 BLDC motor x1

aliexpress cheap hiking tumbler x1

stainless or carbon steel bearing balls (any size) x500

F695 ball bearing x8

M5 SHCS L50 x3

Timing belt for Voron M4 extruder x1

5Ø shaft of Voron M4 extruder or 5Ø shaft L50 x1

AF type 2gt 20T timming pulley x3

m3 brass heatset insert 3x4x5 x5 (minimum)

m3 SHCS L40 x2

m3 SHCS L30 x2

Sturdy plate and memory foam for vibration resistance

TPU and PLA filament

any silicone tube

24V power supply

Optional

PWM speed controller 

(unless you will operate your ballmill at full speed. ALWAYS )