Tuesday I bought a tank + contents of Argon from Praxair. A guy is wanting to buy my dads Featherlite aluminum trailer for his full asking price even though he put OBO in the ad. One fender has some damage where some welds broke and I was planning on welding it up Friday night and Saturday, the guy is supposed get the trailer Saturday afternoon. Anyway, the Old Miller330A/BP seemed to fire up just fine, it's been years since I've used it. But my brand new tank + contents of Argon was completely empty, no hiss at all when I cracked the valve open to clean it out. This was the first time I had the cap off of it since the purchase Tuesday.
Praxair is closed on the weekend and I need a tank of Argon so I can repair the trailer. There is a chance Rural King will have Argon and they are open on weekends but it will cost me about $250 for the tank and ~$40 or so for contents. If I buy a tank and contents from Rural King is it likely that Praxair will refund the money for the tank and argon I bought from them? Or perhaps Rural King would refund the money for the tank I would buy from them. Of course if there is a place to rent a tank that I can pick it up Saturday, that would work great too. I don't know what the standard policy is for returning a tank after purchase but Praxair has put me in a horrible bind with this mess. I have to do a few welds on the fender, and a couple of inches of weld on the fender mount on the trailer.
Anywhere I can get Argon on the weekend? I guess Argon/CO2 mix wouldn't work?