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Brass or aluminum circulating pump how-to build plans
Circulating Pumps of Flat Metal
An Original Two-Page Article / How-to Plan that was removed from a 1940 magazine.
Excerpt: "Useful for numerous purposes in the shop, laboratory, or darkroom, a small circulating pump such as shown can be built out of sheet brass or aluminum. No castings are required. A motor, from 1/32 to 1/4-h.p. is needed, depending on the size of the pump, three sizes being covered in the table. The body is made from three square brass plates."
