SP-15 Questions

Hey All, I have a Challenge 15MP which is the knock off of the SP-15 and am having two issues that I would love some help figuring out. Question #1: Oscillating Roller Recent home construction resulted my contractor accidentally flooding the room where I keep my press with very fine concrete dust. I cleaned off […]

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The Printers’ Album

The Printers’ Album was the house organ of the Challenge Machinery Company. It featured articles on the business of printing, equipment manufacturing, production tips and tricks, and display ads for Challenge products. The five covers that are shown here from 1925–26 are among the best and illustrate some of their manufacturing processes. The magazine began […]

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