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
SKI BRAKE
When descending on alpine skis, as soon as the transverse or longitudinal load exceeds the set value, the binding automatically releases, freeing the foot from the ski. The detached ski...
Roller Scooter
It seems incredible that the chrome-plated roller bike, one of the numerous exhibits at the Central Exhibition NTTM-82, was made by teenagers — it has a very "factory-made" appearance. And...
