The bracing for the station 1 corners is cut from .062" 4130N sheet. I did this with the cut-off wheel and used the bottom of a take away food container as a radius guide. They need to be situated at the mid point of the tubing so I marked a line and then made an aluminium shelf for them to sit on whilst being tack welded. Am yet to drill holes for the engine mount. Will do once I have worked out the mount design.