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
CONTACT — THE CONTACT!
Motorists know that if a car a long time not to use the battery terminals to prevent oxidation must be removed, and the open contact of the battery terminals to isolate. The easiest way...
ACCOMPANIES THE LIGHT
Light setup is very popular among young people. Scheme of another variant of this device suggested that the magazine "Radio, TV, electronics" (NRB). It consists of three color channels...
