3030 Extruded Aluminum Miter Box & Jig Setup

I'm making a frame fr a Hypercube Evolution and needed to cut the 3030s with a hacksaw. so i make this setup. the end thing is set up to be a jig so you need to measure once and held down to 51mm wide board with a c-clamp. the holders i put them on the 3030 placed the with a little glue to be squared with miter then screwed them down.