One of my builders wants me to make him some stairs. The stairs are complex, winding up a 3-story building. For part of the distance, he wants stairs actually cut into 3x10x1/4" rectangular steel tube, effectively turning them into stair stringers. I'm a little at a loss as to how to actually make the clean cuts. I can make cuts with a plasma cutter or cutting torch, but the cuts will be slightly ragged.
Any ideas?
GWE