Many products have elements of quick fixing which uses a special manual nut or screws with knurled head. Losing such detail — it is simple, but to pick up then another of the same — much more difficult.
It is easier to make such a fastener from the usual, standard: apply to the faces of the nut or screw head bluntly triangular and rhombic nail file or needle files frequent risks (mutually diagonal or along the axis).
I. GLUKHOV, G. a R a n with it, Mordovia
Recommend to read
SOUND AND LIGHT TEAM
Automatic devices that produce sound and light signals, are widely used in various designs and models. Usually auto-switch performs the multivibrator, the control of sound or light...
“EUREKA” IN THE ROLE OF “FRIGATE”
the design consists of a float with an electric pump that is lowered into a barrel of water intended for irrigation. The drive uses a mechanical "heart" washing machine "Eureka" —...
