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A few years ago, I went to a yard sale and bought a set of auxiliary camera lenses, which included a telephoto lens and a wide-angle lens. Unfortunately, I didn’t actually own the Canon AF35M camera they were designed for, so I was never able to use them; attempts to sell the lenses on Nextdoor and Craigslist also failed. Recently I thought to take apart the lenses, and found that they were of constructed of interchangeable parts — the only differences between the two were the length of the lens tube, and of course the lens elements themselves. (The featured…
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I picked up a broken blender from a neighbor, hoping to fix it and use it for my own projects. The blender is powered by a 1500 W universal motor, whose speed is controlled by a TRIAC. A safety switch prevents the motor from running, even if it receives power from the mainboard, unless a blender bowl is put on with its lid in place. It also shorts out the motor when the bowl is removed, possibly as a safety feature to brake the motor if the bowl is suddenly removed rather than let it coast to a stop. A…
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Some time ago, a lighter in my house ran out of fuel and I decided to take it apart despite “common sense” (i.e. a blind and baseless fear of fire) telling me not to. To be fair, the last time I took apart a lighter, there were hair-singeing consequences, but this time, I verified that the lighter was completely empty of fuel to avoid this risk. The lighter is disassembled by removing a single screw towards the back, a press-fit collar towards the front, and prying the two halves of the glued-together case apart. Inside, there are two levers: a…
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This is the disassembly of a Yale Assure Smart Lock. The outside part (called, according to Yale, the “Touchscreen Escutcheon”) basically consists of a touchscreen interface and a traditional cylinder lock. A metal plate with a keyhole mounting hole (that’s the hole shaped like a keyhole; it has nothing to do with keys), which is possibly an alternative method of mounting the lock, covers the screen mounting bracket. After it is removed, the screws holding the plastic bracket that holds the touchscreen can be undone. Another plastic piece holds the screen cable in place, and a metal bracket secures the…
