
Construction and mounting the nail dowel for fixing metal structures to concrete made from hardened steel. If you release hardened on the fire and sharpen the head a certain way, and then tempering it — get a perfect tool to the drill for figured wood and soft metals.
L. MOROZOV, G. Samara
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...
Glider model class A1
At competitions of the Moscow schoolchildren model pupil of the 55th school Igor Svistunov in adverse weather conditions (wind of 6-10 m / s) scored 501 points. Only breaking model at...