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Letters

Another Catch-22I read with interest the "Forty-Amp Catch-22" article in the December 2017 issue....

Capturing Helmholtz Free Energy

Energy thats similar to an open-ocean wave break also exists in engines. Can it be harnessed with a tunable induction system?

Product Review: Garmin’s New aera

Paul Bertorelli reviews Garmin's latest offering, the aera. It's compact, powerful and versatile.

Shop Talk: V-Block Drill Jig from Scrap

Having problems drilling a precise hole in a tube? Ishmael Fuentes has the perfect-and inexpensive-solution with this nifty, easy-to-make V-block drill jig.