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
SLIPWAY FOR ROOM
The one who animaetsya room with model airplanes knows what a difficult job the installation of the stretch marks. But they stiffen the easiest transparent planes, and even a small error...
CIRCULAR SAW IN A CASE
A circular electric saw is a very useful thing in any household. In terms of usefulness, it is probably in second place after an electric drill.
About the design of the electric saw: it...