These legs are about 4x2”. On the Atlas, which including the drive weighs about half as much, they’re 3x1-1/2”. Both are pretty solid.

With that oversize drive there’s not much usable space underneath the Stark - the old stand for had a metal cabinet attached to the front but that kind of got in the way. I’d still like to store a few things for it inside the doors like on some old Swiss machines, basically arbors and collets, but will need to upgrade the hinges first!

This example is for one of these Aciera F1 Page 1

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I haven’t figured out different machine heights. I put mine a lot higher than usual, I thought maybe it’s because they’re smaller, but those little Swiss mills are 2 inches lower than many bigger American machines!

It is nicer setting up when they’re lower, and, for many jobs, running the horizontal spindle, which is why I made this one a little lower than the Atlas.
But I think at it’s lowest the machine table is higher than a Bridgeport table at its highest.

Is it because manufacturers anticipated workpieces and accessories that are heavier and bigger and harder to see over?

I just keep a step stool handy.