Bike pedals used to put a metal screw cap to protect the bearings from contamination. Now, instead, use the plastic plugs, which are often lost. Rescue plastic or nylon tubes from medical bubbles. Such substitutes being kept quite steady.
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Well adults: they do not rise from their beds. And the kids? To change them like clothes with shoes, each year at most? Here and thrown into the yards of the old cots. But they can be...
There’s a machine… on the table
At first, like most beginner radio amateurs, I drilled the mounting holes in printed circuit boards with a universal tool — an electric hand drill. However, it turned out that for making...
