X5S Corner angle plate

To add stability, X5S frame was assembled onto a 26mm thick square of laminated both sides counter top type material. It's good dimensional stability and very flat surface make a great foundation to build on.
I wanted to attach the X5S to this so I made 4 of these corner angles which help to square up the frame as well as attach machine to slab. The angle is held to frame using 4 "T" nuts each. The angle has a raised lip on one side that goes against the wider 40mm side of frame upright. This s