This is a great idea! It would get your feet wet in the consulting world.Happy Birthday Mr. Smitty.
You could run a little "Intro to welding" class.
Lord knows I could stand some pointers.
I've got the grinding ugly welds down pat.
I would also imagine there is plenty of work for an experienced welder who just wants to do it as a side gig. Pick up a few jobs here and there, charge by the job. You could easily add several grand in income over a year.