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
MORE ABOUT LIGHTNING
In the journal "modelist-Konstruktor" No. 12-97 was given to the Council on the restoration of the zip with the weakening of the lock slider need to pull it out with pliers. However, the...
THE SECRETS OF “TRAINS”
A lot can be called the factors contributing to the decline in the popularity of automodelisme among boys. The problem is not only with good engines, but even with fuel for training, the...
