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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Dear editors of the journal "modelist-Konstruktor". Your journal I read from 1988 (I'm now 33). By profession I am a mechanic, own a welding business, and to all, a big fan of...
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In technical hobby clubs there is often a need for wooden workpieces with an even, smooth surface. Getting a well‑sanded board is not easy: hand processing is labor‑intensive and requires...
