Quote Originally Posted by EdSawyer View Post
Nitrogen from a gas supply place will be the cheapest vs. Argon or something like that. Find a good welding supply place and a 25lb tank will last forever.
The problem I have with Nitrogen high-pressure tanks is that over here they have to be opened and examined after a while. If one buys a large one to save on the refills, it easily can be that before even the first refill it has to go to technical examination.
Yes, we Germans...