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  • Threaded Inserts with Heat Staking and Ultrasonic Welding
    Applications for threaded inserts in injection-molded parts abound. They are common features that show up in a range of industries and in a variety of parts-housings, casings, electronic enclosures, appliance knobs and dials, etc. The two methods we use at Protolabs for threaded inserts, if insert
  • The `Good Old` Power Days (.pdf)
    of high-voltage power transformers could put you to sleep. If a current needed "tweaking" you looked at a 3-inch panel meter, and took control with a knob you could get your whole fist around!. Power resistors were big wirewound guys. They had hollow cores and were covered with shiny brown enamel

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