Quote Originally Posted by Irving View Post
I want square tubing legs that are adjustable height, which means I'll need two sizes. I recent saw a fab video about removing the interior weld inside tubing. I'll have to watch it again to see if it's something I think I can handle. I'd like to use a drill press for all the holes, but I don't plan on getting a drill press until I have a table to put it on.
5/8 x 4 bolt and nut will make your legs adjustable. Weld nut into outside corner at bottom of tubing, screw in bolt.

If want casters, use bolt longer than casters are tall. Roll to location, level up.