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
SIKORSKY MH-53E SEA DRAGON
The first flight of the new helicopter, designated V-65, was held in October 1964. This car was designed as a replacement for the aging transport helicopters amphibious S-61 in marine...
AN-2 BIPLANE-SURVIVOR
The first mention of the project landing version of the aircraft, biplane, future of the An-2 is dated 1944. Then his traces are lost and emerge a year later. Then, the proposed biplane...
