Make Your Own Relays

Volume 9 of the Popular Mechanics DIY Encyclopedia (1955) has a section on how to fabricate your own A.C. relays.. Just look at that guy making a relay with a hammer! I love how the section of building relays is thrown in with the sections for repairing your roof and fixing your refrigerator, as if this was a common task for the 1950’s homeowner.

Available to borrow fromĀ Open Library’s Lending Library program!