Motorized Grinder

Motorized grinder, i use it to grind the fish food flakes to use them in an automatic feeder. BOM Screws M3x8 - 15pcs Heat Insert M3x4x4.2 - 3pcs Ball Bearing MR128-2RS - 4pcs Flange coupling connector 3mm ID 12mm height - 1pcs Low Voltage DC Motor Speed Controller PWM 12v 2A Adjustable Driver Switch - 1pcs DC Power Jack Socket Threaded Female Panel Mount Connector with wires - 1pcs 31ZY permanent magnet DC motor - 1pcs