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
“ANT” BODY FORWARD
First of all, I thank the editor of "Model construction" for the promotion of ingenuity, intelligence and talent of ordinary people, for the opportunity to use his rich creative...
IN THE ARSENAL OF A JEWELER
Improvised creativity are addicted to for a very long time. And in many respects it was promoted by my favorite magazine "modelist-Konstruktor". Released since 1972. The recommendations...