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The first step was, of course, to make a fixture: a sacrificial wood block with a raised section that fits snugly inside the cap
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She does a lot of outdoor close-up photography peering into a washed-out LCD panel in full sun.
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We put it back in the garden where it can turn into a moth and produce more Wooly Bears to delight children of all ages.
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Assembly is straightforward, but goes much more easily with three hands.
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The nominal EMT size is 3/4″, which (of course) means the ID is about 0.8″ and the OD is a bit over 0.9″.
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A foray into the parts heap produced a copper bolt threaded 1/2″-20 and a matching steel nut.
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The cylindrical center of the pedestal must conduct light into the dosimeter, conduct a positive charge into the contact pin, and push that pin hard enough to make contact inside the dosimeter.
