A thin drawing pen tool is fragile, and inserted in a normal pen, easily spoiled by careless storage. Better to use it with the handle, and with a collet Chuck: and is held securely, and, turning, to store this safely.
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MOP-SURVIVOR
No matter how mounted brush for floors to handle, soon she still gets cranky, and there, staring, and start to come off. This will not happen if the connection is at once strengthened by...
Electronic ignition for “Voskhod”
In the second issue of "M-K" for 1976, I read an article "Electronics on a Motorcycle" about an electronic ignition system. It has a DC to AC voltage converter. This circuit requires a...
