In cases when you want to prevent turning of the screw, screwed into a Board or plywood, I use a very simple way. Of stiff wire or a nail, whose diameter corresponds to the width of the slot of the screw, hollow out a U-shaped bracket and pin it as shown in the figure. Upon entering the slot, it securely holds the screw.
S. DUBINSKY, Kiev
Recommend to read
RC GLIDER-DUCK
The desire to create something unusual and striking, inherent, perhaps, to each of the modelers. This made sense at the time to try to find a new class of radio controlled gliders, which...
MULTI-STAGE STORM HEIGHT
The idea of composite, or multi-stage rocket put forward by K. Tsiolkovsky in 1929. And on may 19, 1938 near Moscow for the first time in the world was launched two-stage rocket designed...
