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Yes, I just corrected the seconds to minutes! Thanks!

In my first posting on this thread, I calculated that I should conservatively have 240 minutes of actual welding (actual bead laying) time, or more if I can keep using the Argon gas cylinder once it drops below 500 psi. Having Googled TIG welding speed, which is slow compared to, for example...

Yes, I have an A,B,C fire extinguisher on the wall by the exit door, ready to use. I also keep a spray bottle of water right near where I TIG weld and where I will be plasma cutting, not to douse a fire (the fire extinguisher will do that much better), but rather to douse my skin or clothing...

Yes, Many years ago I was in manufacturing management, and was as a result the chief safety officer in manufacturing plants that had lots of hot processes including MIG welding and lots of flammable liquids and solids, so I am very attuned to keeping a very clean shop in my two retirement home...

I just received my inexpensive 50 amp "lunchbox" size plasma cutter from Amazon. I have not used it yet - will read the user manual first (despite the universal prohibition among REAL men to never read the instructions first!). But, I have watched a number of videos before even ordering one, so...

Ok, this makes me feel a bit better about my Argon consumption. Jim G

We seem to have drifted seriously off topic . . . Jim G

Yes, I did.

Thanks guys, for the additional very useful and reassuring ways the best pro shops do it. That makes things a lot simpler for me as I learn about TIG welding. :) Jim G

I do realize that a plasma cutter also "hardens" the edges of the material where it has cut, via heating to a very high temperature, but the cut edges would often be "not-for-welding edges, but rather edges that are going to be just ground or belt sanded (with aluminum oxide belts) for a...