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    Durango & Silverton Narrow Gauge

    Here are a couple of pictures I took on our excursion on the Durango & Silverton Narrow Gauge Railroad.
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    Power for camera from track

    I want to supply power to my miniature car-mounted camera from the track, instead of a battery. I have the following circuit in mind: The four diodes form a full-wave rectifier to make sure I have the right voltage polarity at the camera regardless of which way the train is on the track. The...
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    Modeling rocks of the Southwest

    Does anyone have any tips or tricks for modeling scenery of the southwest, such as the buttes, buttresses, and other sandstone formations as are found in Bryce Canyon and other areas in southern Utah or Arizona? None of the rock molds that I have seen seem suitable. I haven't come up with an...
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