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
DYNAMIC HOOK
Many model airplanes-students dream to provide their own model gliders hooks for dynamic start. Designs that have already been published, quite complex for the manufacture of novice...
“SNOWMOBILE” WHEELED
The propeller as the propeller has long attracted my attention. When the "Modeller-designer" were published about cars, it convinced me to make a similar design. Maybe in the proposed...
