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
SUSPENDED ELECTRIC
For some time, I was fond of fishing from a boat. That’s why I decided to make a portable electric motor for trolling (fishing from a moving watercraft powered by a motor, usually using a...
“PANTHER HUNTER”
Shortly after the outbreak of the Second world war, the Germans faced a serious crisis in the anti-tank artillery. Their primary 37-mm gun Cancer 35/36 was completely powerless against...
