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
SIBERIAN FLY SWATTER
Each warm season from spring to autumn throughout recorded history of human existence it bugged various harmful insects, and the stronger the closer to nature it is. And the most common...
AIR FERRY
Once in the journal "modelist-Konstruktor" I read the article "the Farmer's sloping field." The air route is very much needed in the highlands. But in nature, there are many horizontal...