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.
Recommend to read
FALCON-2 — CONQUEROR OF DOMBAY
The best Amateur-built glider, took part in the competition "Dombai tops" in 1978, was named "Sokol-2". Its Creator — Leningrad master of sports V. D. Mikhailov, a renowned specialist in...
STIRLING ENGINE
The Stirling engine is a heat engine invented by Robert Stirling in 1816. It differs from the internal combustion engine because the fuel burns outside the engine, making it much...
