Due to the feedback compensation of the photoelectric switch, this is a closed-loop transmission system, so it does not require precise gear transmission. PLA or ABS can work normally. As for the service life, if the gears are worn out, just print one more for 0.0001 cents. Because the price of metal automatic feeders is so expensive, a brand new one costs at least $200 each. Therefore, 3D printing feeders are the only road options available. Its only drawback is that it cannot move at high speeds. It takes 2 seconds to complete a feed, so you can only place a maximum of 1800 components per hour.
I am creating a new version that uses an infrared encoding chip to send and receive commands (NEC's remote control encoding format), and the feeder only needs a 5V power supply to work. I even installed a Panasonic 18650 lithium battery for the feeder, so it doesn't require any cable.