Hey Papa that's a good idea for the oxy concentrator! Definitely safer and probably cheaper (In my neck of the woods you rent a oxy tank for ~130$ a year -includes delivery- and fill ups are about 50$).

Pete sorry for the hijack, but Papa where did you get your victor tips? I just bought a J-28 w/ UNN-J nozzle (propane compatible I believe) but it came w/ a #00 TEP tip that may be too small for propane.

Late edit: actually renting an oxy tank is 60$/year + 30$ refill, the above prices are for oxy AND acet