Mini conveyor belt - 3D model

This conveyor mechanism is actuated by one N20 3mm DC 6V 200RPM Metal Gear motor.

The conveyor mechanism alone measures ~9.5cm width and ~9cm high. Including the housing for the motor increases the width to ~18cm. The length is up to the user. In my case the conveyor has a length of 11 cm. I also designed a crate that can be used to catch the parts as they are falling from the conveyor.

The housing for the motor has a section where a circuit board for the motor driver can be put. I have also provided a cable management channel for the wires running from the motor driver to the motor. 
 

To assemble the conveyor mechanism the following parts are needed:
 

• 4 corner brackets
• 4 roller supports
• 2rollers
• 1 motor support
• 1 motor support cover
• At least 20 pairs of M3 bolts and nuts (if you plan to screw 2 out of 4 four holes)
• 1 crate

Note that I willingly omitted one roller support that is next to the motor.