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Of late, the magnetic stirrer mixing my morning cocoa occasionally doesn’t start spinning when I turn it on, which calls for some investigation. Removing the four obvious screws concealed under the rubber feet and prying off bottom cover reveals the trivial innards: The speed adjustment pot holds the little circuit board in place, with the…

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It turns out that the laser beam in the top picture is about 10 mils wide at the center point, so you can easily see a difference of 1 mil in the Y coordinate.
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Brandishing a heat gun in a threatening manner solves that problem.
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This is about a stainless steel socket head cap screw I installed eight years ago.
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This herd seems to be a family unit that’s traveling around the neighborhood.
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I’ve spent the last few months associating a red LED at that spot on the dresser with a jammed X10 controller.
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Turns out that a chunk of HAL code can do a nice job of locking out an inactive joystick axis.
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Yes, I know all about why you shouldn’t have E-stop run through software. This is a Sherline mill. Work with me here.