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
FLIES LIKE A REAL
Many Teens are addicted to in summer camps and aeromodelling clubs the production and launch of thermoerosion, or as they are called, balloon-balloons filled with hot air. Anyone who...
SIBERIAN ROCKET
In the circles of rocketmodeler name V. Menshikov known. Honored master of sports, two-time world champion, repeated champion of the USSR and Russia — this is not a complete list of...