Input on DIY budget cnc machine

[Noppishen]

I suspect Jazz was talking about something the size of a Sieg X3, rather than a full-on vertical mill.

A Seig X3 would take a single phase input, be as noisy and big as your current plan, maybe slightly heavier but its to your advantage (and its still moveable).

You could buy a manual one and do a CNC conversion if that's the bit that interests you?

I want something stiffer than that, I have heard online that mini mills are questionable. The table is also a bit smaller. I'd have to change from the chuck too.

If fusion 360 is to be believed, my current design would weigh 256kg, with the option of filling the main frame.
I might also have found a way to weld the main beams to make the main frame.

Some of the appeal would be the clear upgrade path, flood cooling, Mechatron spindle, Hiwin linear rails etc. I really like that it is designed to fit into a tight housing.
As long as the main frame is sturdy enough I believe I can upgrade it to be as accurate as possible later on.

I am pretty set on building it myself, but you guys can probably spot if I have made any large mistakes in my design, or if there is some easy way to improve performance.