I was busy the last couple days, drawing a new CNC, I have thought about what the flaws were on a Diy Pipe rail system most of us build in wood/MDF.
I will be using a torsion box system, and also nave a new twist, by adding an extra Pipe rail on the long Axis. I think this will help alot on the twisting and rocking of the Gantry.
Here are pictures of my drawings.