The same salt may be used to caseharden wrought iron. From Wordnik.com. [Scientific American Supplement, No. 430, March 29, 1884] Reference
A Uberti in 44-40 Blue/caseharden Steel, NM, 5 l/2 bbl, Walnut grips. From Wordnik.com. [Beware The Oddball Gun] Reference
I am persuaded that all valetudinarians are too sedentary, too regular, and too cautious — We should sometimes increase the motion of the machine, to unclog the wheels of life; and now and then take a plunge amidst the waves of excess, in order to caseharden the constitution. From Wordnik.com. [The Expedition of Humphry Clinker] Reference
But I must take exercise, and caseharden myself. From Wordnik.com. [The Journal of Sir Walter Scott From the Original Manuscript at Abbotsford] Reference
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