[TheForge] why doesn't cast iron oxidize and burn in the same way?(was: oil/wax finish, blackened steel)

[Andy Gladish]

Just like when cutting, you can back way off and the O2 jet will keep 
cutting, even thought the preheat cones are too far from the work to do much

-----Original Message----- 
From: Jerry Frost
...you could shut off
the acet once the steel began cutting and the burning steel did all the
work. I've never heard of it anywhere else so can't say how true it is.