Pretty cool! I was looking into building one myself, it looks challenging.
300mm Diameter, 1 Meter tall, Delta 3d Printer
Build in 'Delta Bots' published by Gerald Klein, Jan 14, 2018.
I built a custom delta using 3, 1000 mm long C-Beam® Linear Rails and 3 C-Beam Gantry Sets. I had the bottom and top plates water jetted ( for accuracy ) out of 1/2 inch aluminum, from a design that I did in Fusion 360.