should i get a bigger oxygen tank

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a friend of mine is giving me a torch set and i'm renting tanks from my local welding shop i'm getting a 75 cubic foot acetylene tank i'm gonna my torch for cutting and a little weldingand i heard a lot of people say ur oxygen bottle should be bigger than ur acetylene tank if u use torches for cutting should i get a big oxygen tank or just get an 80 cubic foot bottle ?
Reply:I always say get the biggest cylinders you can. And switch to propane, unless you're gas welding."Where's Stick man????????" - 7A749"SHHHHHH!! I sent him over to snag that MIC-4 while tbone wasn't looking!" - duaneb55"I have bought a few of Tbone's things unlike Stick-Man who helps himself" - TozziWelding"Stick-man"
Reply:Originally Posted by Stick-manI always say get the biggest cylinders you can. And switch to propane, unless you're gas welding.
Reply:When I cut I go thru about 3-4 times as much O2 as I do acet. I usually run out my 75 cf acet about the same time my 282 cf O2 cyl is ready to get swapped out. On the otherhand heating and welding you go thru roughly acet and O2 at a 1 to 1 ratio, so the 80 cf would work just fine for that.It costs me just a few bucks more to swap out my 282 cf O2 as it does my 100 cf O2 cylinder. Needless to say I almost always use the bigger O2 cylinder because it's so much more cost effective. Now the down side of the big cylinder... It's not really "portable" something to consider if all you have is a small car.  Also I own all my small cylinders, but most large cylinders are rental or leased. That means a big cylinder will cost me money to just sit, while my smaller ones can sit unused for years and not cost me anything.You need to weigh out all the pluses and minuses and see what makes the most sense..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan