Some of you have mentioned many "Tools of the Month" are rather pricey for the average sometimes do-it-yourselfer, and we agree. It costs money to have a home shop. But it costs more money to pay a ...

We demonstrate how a magnetizer and demagnetizer work, showing when to use each function and why it’s useful for tools and hardware.

This article was originally published with the title “Demagnetizer, Induction Hardening, and more” in Scientific American Magazine Vol. 166 No. 4 (April 1942), p. 203 ...