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
WHO IS FASTER?
Probably you are familiar with simple electrical device for training "the steadiness of the hand" — a metal panel with a narrow winding slot, along which, without touching its edges, it...
FOLDING HANGER
In homes with small hallways are sometimes difficult to place even a coat rack, not to mention furniture. If you make a few kronsteini retractable hangers, then you can do without any...
