Enameled Horse Trough Sold as Bathtub
John Michael Kohler takes a horse trough/hog scalder, heats it up to 1700° F and covers it with enamel powder. He includes it in his catalog, describing it as "a horse trough/hog scalder when furnished with four legs will serve as a bathtub." The first bathtub is sold to a local farmer for a cow and 14 chickens. Troughs soon give way to more stylized bathtubs with rolled rims and brass fittings.

Flat Rim Kitchen Sinks
Enameled cast iron kitchen sink basins are offered in sizes ranging from 12" x 13" to 20" x 48". The smallest one sells for $2.40