It’s true that a lot of the projects we feature here (and build ourselves) are created to accomplish some sort of goal. But, many times the project itself is the goal. That’s the case with [Proto_G’s] ...

Hoerbiger-Origa, Glendale Hts., Ill., has recently expanded its oscillating-valve product line to include an electrically actuated version. The new design combines advantages of standard solenoid ...