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
FROM THE “US-1” TO “VOLYN”
Since came to light the car, designers fascinated by the problem of creating a small and cheap machine. Not a toy, a car truly fit for normal use. Early attempts led to the...
“PUMA” WHEELED
In the early 1980-ies of the IVECO group by order of the Italian army began construction of armored vehicle of a new family of wheeled APCS (4x4 and 6x6), received the official name of...