[mr48chev]

I don't see any reason you can't weld the angle together to make square rails for the frame table if you want a frame table. Just like any other welding don't get carried away and run long continuous beads.

With my knees it is uncomfortable for me to squat or crawl around to work on much of anything and I am going to build a frame table out of some mobile home frame rails that I salvaged if I have enough straight lengths to get the job done.

You can always lay some plywood or metal on it and use it for a large work bench/table when you don't have a frame on it if you have room to keep it around after the frame is done.

It is what ever works for you and makes your work on your project easier not just the opinion of others who may or may not feel the need for something like this.