Appeared in the sale of original brushes for drawing, the pile of which is pressed into a special plastic handle, as the core of the pencil. To “sharpen” enough to hold the tip over a fire: it will burn, and fire resistant hairs exposed, and you can draw.
But in the same way as a pencil, this brush soon becomes very short. However, it should paste it into the appropriate tube, and it will serve more.
Recommend to read
DRYING… MAGNET
In the last issue, we reported on the unusual at first glance, the method of drying wood in the bath water, between the electrodes, the supplied current of industrial frequency. This...
A ROTOR SAIL ON A CATAMARAN
I would like to tell the readers of the magazine about a catamaran whose movement was achieved using the Magnus effect. The Magnus effect consists in the fact that when a rotating body...
