Well. I have a 2 gal 150 PSI air compressor, and last night I saw Walmart has all these cutoff\air tools that are now on uber clearance (since who the hell goes in walmart and buy stuff like that?) so I might TRY their steel air cutoff tool. If it breaks, big whoop, 10$ down the drain. This is the one:
air cut off tools, cutoff tools, Campbell Hausfeld TL1135 Pneumatic Air Cut-off Tool - 20,000-rpm - OneStopShopCatalog.com