Step 1: Linear Slide Bearings

So, you say you want to learn how to build a CNC machine. This video demonstrates the first step in doing just that. You will learn how to build the linear slide bearing. This bearing is used to provide linear motion to the three axes that this CNC router will have.

Quick steps:

1. Find an aluminum angle. I'm using the 3/4" angle 1/8" thick.
2. Cut the angle to about 3 1/2" for the z-axis (the first axis that we will build).
3. Drill and tap 4 holes to accomodate 5/16" screws or bolts. Two on each side of the angle. The holes should be as close to the inside edge of the angle as possible
4. Slide a 608Z skate bearing then a nut onto a 3/4" long 5/16" screw or bolt. Do this for four screws.
5. Screw the bolts onto the outer sides of the aluminum angle.

Official Linear Slide Bearings Page

Step 1 BuildYourCNC: Linear Bearings - Celebrity bloopers here