DIY Slide Rail EndCap.

This 3D printed part lets you build your own 12-inch section of slide rail for around $5 dollars per foot. The main rail section uses a 12-in Steel Zinc-Plated Corner Brace and two 12-inch long 1/4-inch diameter round Steel Rods. The 3D printed EndCap holds the two 12-inch Steel Rods firmly next to the Steel Corner Brace to create a slide rail. Standard Patio Door Bearings can be used to create a carriage that can ride up and down the slide rail. All of these parts can usually be found at your local hardware store. You will need 1/4 inch diameter Nuts, Bolts and Washers to hold the 3D printed EndCaps onto the rail.

The Steel Corner Braces are available in straight bars and right angle corner brackets.
They can be combined to create a sturdy 3D printer frame.

This 3D part was designed using the freeware software package eMachineShop.