[Gabe]

This technology won't be arriving at any robotic shops for a while. When the cost for setting up a oxyhydrogen generator and tanks is less than the cost for setting up an oxyacetylene outfit, then maybe I'll go that way. Until then, I'll keep welding with acetylene.

You can use hydrogen instead of acetylene with a regular welding torch. All that is required is a separate hydrogen tank and dedicated regulator. In fact, you use the same torch and hose lines, as you see in every one of these movies.