Opentron P300 Gen 2 Pipette Replacement Carriage

I made this part to replace the whole black plastic carriage in the pipette. I only modeled the left-most mounting screw holes. Those holes were used in the P300 Gen 2 pipette.

This is the matching steel rod you'll need to build a replacement: https://www.mcmaster.com/2900A267/

The steel rod in the injection molded plastic is trapped in the plastic. Unless you want to break apart the plastic, then you'll need a new rod.