How to make a Jig for cutting Brass Tube

This is a video on how to make your own brass/aluminium tubing to a specified length.
I used styrene sheet and styrene U (or n) shaped lengths.
The base is 30mm x 12mm
The Back Plate is 6mm x 12mm
The sides are, whatever length of tube you want to cut, from 1mm upwards, your choice.