CNC edge alignment fence for 20x20mm section

This is just a simple project I did to make a small fence that fits on the side of the bed of my cheap Chinese CNC router. I decided to make them so that I can keep material aligned with the edge of the bed when clamping down before routing or lasering - they can be easily removed after clamping if desired. Hopefully I'll find other uses for them too :-)

The OpenSCAD file is included for customisation. I included variables for the length and fence height (that's the height above the bed, not th