Dunno how to go about that TBH, and I doubt the welders rent dewars. Although I am sure I will find a way to buy a dewar after paying rentals fees a few times I am sure.
I found the local company (I thought it was Airgas) just happened to be o nthe same page. They handle all kinds of cryo and are only 3 miles away
I can hold it in my hands for that long right?