Cast in many industrial products have long been used mortgages (anchor) bolts with special heads, such that not only pull, but rotate can’t.
With the advent of high strength composite self-hardening compositions that bolt you can “lay” in the body of the finished product (plastic or metal) and making it pre-nest, and then simonaityte.
Recommend to read
WATER MOTORBIKE
The pedal boat is a machine that has long been mastered by technology lovers, both young and old. Two light floats connected by a simple bridge, and on it is a frame from an old bicycle...
THE SHEATH OF THE COILS
If you have accumulated empty empty threads, use them to make convenient holders of knives on the inside of a kitchen shelf or cupboard, it is Sufficient to attach two coils close and...
