I built a sturdy lathe bench once. It was for a 9" South Bend with a 54" bed. I welded mine up from 1/4" thick angle. Mine had drawers because there are many little things that go with a lathe so I figured I'd need lots of storage.
When I was done welding I cleaned it up and took it to be hot dip galvanized. Inside, it will be rustproof for centuries. Here it is on my old truck getting ready to go be dipped:
The headstock and tailstock bed ends sit up a bit above the rest of the stand. I usually had a baker's sheet pan underneath which did a pretty good job catching chips and was easy to empty and clean and cheap to replace if needed.
The columns at either end had drawers. If I had it to do over again I'd have made fewer deeper drawers, as mine were too shallow to hold chucks.
Here is my working shop drawing:
http://nwnative.us/Grant/images/stand.pdf
Note I used 2x3x1/4" angle - this was just because there was a very cheap source for that material at the time. Today I'd use 2x2x1/4" angle.
I had a cabinet maker buddy knock me up the wood drawers.
I worked from a Home Shop Machinist article by Ralph Walker. That stand turned out great, and I'm sure the guy I sold that lathe to is still using it.
metalmagpie