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Quite some years ago, I rebuilt my Sherline controller box to reduce its electrical and acoustic noise, then did a clean-room reimplementation of the firmware in the PIC microcontrollers.
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Somewhat against the recommendations of the experts on the EMC2 mailing list, I bought a Foxconn R30-D2
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Grab diagonally opposing corners in a bench vise and slowly increase the clamping force until the case snaps apart.
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A quartet of 5/16-inch lathe bits provided the right spacing to hold the heatsink over its new flanges while the epoxy filled in all the gaps and irregularities.
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Y’know how some folks say they don’t wear a seat belt because they want to be thrown free in a crash?
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The solder blob on the other side looked just fine, but you simply can’t tell by looking.
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Turns out that the rear brakes on a Tour Easy are backwards from their orientation on an upright bike
