I bought 2 "T" sized bottles and a 390 CuFt Acetylene bottle for $120. All are approved as private-owned by my local vendor. One T bottle is full of Nitrogen. What can I do to have fun with that? I only have two shocks I can refill, and filling tires with it is silly unless you are actually going to race and heat them up.
Use it to pump beer. The Budweiser rep has told me that Guinness is supposed to use nitrogen instead of carbon dioxide. since it isn't a liquid in the tank like carbon dioxide not sure how many kegs it would do but less than a similar sixed carbon dioxide.
You got the shock part. If you are around dirt bike guys you can use it to blow out the dents of two stroke expansion chambers and apply heat without the dangers inherent with air. I know the refrigeration guys and plumbers installing pipes in hospitals for gasses fill the pipes with nitrogen before silver soldering the joints. I have seen a walk in cooler repair person blow dust out of the compressor for the walk in with carbon dioxide. Not sure if it was just to bill for the gas but I bet the nitrogen would work for that. The advice about just exchanging it might be the best. I have a nitrogen tank laying on the ground outside I don't even remember where I got it and haven't yet used it. I don't have a plasma cutter though.
Well, i don't drink beer and there is no liquid in the cyl. I wish it was, that would be fun. I don't see a plasma cutter in the budget, so i will just wait with it and have put the word out to get those dirt bike shocks over here for refills. I got the nitrogen cyl 4 days after the OA tanks, and had the O2 swapped for Argon. When my medium OA tanks run out i will get the big ones swapped and then sell my mediums to a young friend at a very friendly price.