I use the stainless steel foil Mr. Binnion is referring to and would
agree it works well and also has been used for some time in the die
treating world. I use it to heat treat steel like O1 tool steel
before quenching it.
It works good for making billets of metals. I would re-enforce his
comment about being sharp.It's like a large piece of razor blade and
at all stages you should wear gloves to reduce the risk of cutting
As for the ammonia topic we use anhydrous ammonia as used in the
dairy industry and etc for our ovens.I would suppose this is similar
to the cracked ammonia as to the fact that we use it to disassociate
oxygen from the air as regarding inhibiting fire scale and
These ovens are made to pump the ammonia into the oven and are widely
used in many different industries other than ours.