Often, while working on a model of a ship, I have to drill holes with a diameter less than one millimeter. To this end I have produced a handy drill machine. Maybe someone wants to make one for myself. To collect it is very simple, since it consists of the motor and of the two parts: collets & nuts collets. The collet and nut are taken already ready from of a compass. It only remains to drill at the end of the collet hole diameter of the motor shaft, push it on the shaft and solder. The battery and electric motor from any child’s electrohouse. O. MOROZOV, Bryansk
Recommend to read
INSTEAD OF A SLEDGEHAMMER
For modern engineering and many other sectors of the economy it's not uncommon for such large structures, in which the Assembly or disassembly of powerful bolting already exempt from the...
THE TRUCK PAPER
The entire model except for the axles and the engine is made of paper and cardboard. It can make students 3rd-5th grade. The model is like a real machine of the separately mounted parts,...
