This simple device will help with the help of ordinary hand drills to cut holes of any diameter in the plywood, hardboard and particleboard.
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Multi-purpose helicopter Ka-26 made according to the coaxial scheme with two-keel plumage in the form of a flying chassis. Two engines placed in nacelles on the sides of the fuselage....
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When conducting home experiments with the batteries from the flashlight, the repair of toys and models with motors in adolescents is frequently necessary to connect conductors to the...
