Device for spiralno lines are usually quite complex in design, can not be said about the method of its receipt. A circular boss fixed to prepared for the drawing surface; the wound on the boss thread, and the other end tied on pen or pencil — that’s all, “device”, which is clear from the figure.
Recommend to read
THE DRILL TEAM
Having a pretty powerful compact drive, the electric long gone among the leaders of household tools. And with the attachments, all kinds of fixtures are not averse and in agricultural...
WELL, VERY SIMPLE LATHE!
Small lathe for wood can actually be very simple. The overall layout and main components are known is a base with rails, front and rear headstock; the first is integral with the frame,...
