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Then I put a mirror flat on the Sherline’s table / tooling plate to reflect the beam back up the spindle.
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Obviously, what you’re seeing are overexposed more-or-less Gaussian spots, so their diameters aren’t fixed numbers.
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One might quibble with the last digit, given the bit of snot hanging from the nozzle, but it’s pretty close.
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Hot ABS plastic gives off a characteristic stink that’s hard on the nose
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The inside of a Thing-O-Matic gets pretty dark
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Introducing the belt clamp to Mr Disk Sander provided just enough relief to clear the belt’s backing
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A 1 A fuse can pass 3 A for 80 ms and live to tell the tale!
