Summary

This is a build utility system based on half inch EMT. It includes linear motion components as well as several EMT mounts and a shaft collar. The clamps and truck holes are meant to be tapped 1/4-20.

You can use it for low precision slides, hinges, and custom structures. You can get a tighter fit by scaling the sliding components.

Print them with the EMT holes facing up and then give the EMT a quick hand sanding to get any crud off and then you are good to go.