band saws

something like this.
1 HP 4 in. x 6 in. Horizontal/Vertical Metal Cutting Band Saw

It can cut tube and bar stock up to 4" dia in the horizontal mode or can be raised vertical to cut plate or other stuff. Comes with a little table for vertical mode. Only limitation is the distance from the blade to the support which limits how wide a cut you can make. There are a slew of improvements that can be made, google "harbor freight bandsaw mods".