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
MANUAL SPIDER
Manual digger "spider" is a good help in the garden at harvest of potato, transplanting of seedlings and even during the digging of ditches. He sharply — and a half-two times — increases...
“PIPER”: A CONTOUR COPY
Competitions of different rank showed that as prototypes for the manufacture of contour models are used only a dozen types of aircraft. And to participate our aeromodelling circle in the...
