Amazing inventions, equipment and talented workers with super skills 0:00 Homemade invention for polishing rusty metal pipes 1:32 Small Tracked Cement Mortar Delivery Vehicle 1:55 Fire alarm demonstration 2:06 Quick production of a key for a moped 2:24 Golf ball washing machine 2:31 Tool for cutting rusty screw 4:37 Homemade equipment for dismantling concrete floors 5:28 Homemade universal key from 6:16 A tool that allows you to quickly unscrew a broken bolt