[SEL] Parkerizing, bluing, blacking, & browning iron

[John Culp]

>   I wouldn't have a clue as where to look for ammonium nitrate...sounds
> scary.

Fertilizer store. 50 lb. bags.

I for one wouldn't want to try to immerse a lathe (which would first 
have to be absolutely perfectly degreased) in a 300°F bath of caustic 
bluing salts. Bluing's not that great as rust protection, anyway.

John Culp
Bristol, Tennessee, USA