Building a CNC - Structure frame

So I've started building the new CNC with some steel tubing.
My welding technics are far from perfect but I think I can get the job done.
Here are a couple of shots from the structure. I have a few welding points to make to reinforce the structure but it's quite solid has it is. I can stand on it and it hold good.

So far I've made the cage frame and I'm starting to build one of the arms. I still have a lot to go before this monster starts moving.

Progress is slow but it is rolling...