Tom,
What a fantastic build!! I just read the entire thread, didn't see it before. I think your better half and mine come from the same mold, I laugh when she comes down to the garage for "where's the smoke coming from" or "didn't you just pay XXXX dollars for that?? (as it's mounted in some machining/grinding/welding device) Gotta love that, gotta see thru the sparks!! The only "luck" I had bending 2024 T6 (throw the bend radius formula away) is to do several 20 deg bends 1/8th" from each other, still, rather use a bit thicker 1100 series as it takes vibration so much better. That stainless tubing sounds like to Aircraft O2 system lines, tough stuff!! I applaud your insightfullness on the re-purposing of all the items... When I go to Home Depot and I stare at the plumbing(or any section) and get asked by an employee "Can I help you" I always think "NOBODY can help me man" I tell them, I'm in my think tank, thanks anyway!!
Keep up the great work and Pic's!! "Keep the motor runn'in, get out on the Highway..."
R/Mac