Dan, that cart is looking good!! I just bought one from a junk man with tall steel wheels for 40 bucks. Need to sandblast, prime and paint it also. When the cylinders have the regulators on them, that is when they are THE most vulnerable to causing an accident by falling over. The metal screw on caps prevent the neck from getting broken off in a fall. Make sure if the caps are not on the cylinders (regulators are on or whatever) that they are secured. I can't tell, but if that chain is plastic links, I would immediately replace it with secure metal chain. Rough ground, broken chain, cylinder fall away from you (thus pointing it at you) neck hits a rock, curb, etc and breaks off, over 900#s of pressure pushing that large cylinder into your body won't be pretty. The hollowing rig, thank goodness have stayed away from that sickness at this point. I just call what you all do to hollow vessels and bowls magic!
Are you using flux cored wire on your little MIG?
God and family, the rest is icing on the cake.
I'm so far behind, I think I'm in first place.
Premier Bovine Scatologist
Host of the 2015 FAMILY WOODWORKING GATHERING