Everybody knows to “hide” the head of the screw or nail, a hole must be countersunk. In a domestic environment this operation is usually large diameter drill. But it kvostik drill does not fit, and have to work in the “manual mode”. If the holes a lot, mozopi provided. To avoid them it is necessary to equip the drill very ordinary wooden handle of a file or screwdriver.
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SOCKET — LOCK
To keep the inquisitive child" from dangerous "experience" with an electric shock will help a simple device. In textolite disc Ø 38 mm and a thickness of 2 mm drilled Central hole Ø 3 mm...
THERMOMETER WITH EXTENSION TUBE
To measure the temperature of the liquid in the bottle with a narrow neck pretty hard. Replace the thermometer with a rubber or polihlorvinilovuju up, and the problem will be solved.
