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
DOCTOR SURFACING
From circular knives, no matter where they worked in agricultural units, in the fields or in industrial plants, — wear out really fast sharp working edge. Therefore, innovators tend to...
BANK FERTILIZER
Vegetable waste is a good source of fertilizing horticultural and garden crops, so a prudent owner not disposing them, and adds in a heap of putrescence. So they are not scattered,...
