Solid Engineering

New welding technology

small engine made with paper clips and a homemade solenoid . All metal structure that makes up the engine was made with clips to hold paper and ordinary solder for electronics. On top of the structure has a solenoid made with pen tube and enameled copper wire .
A solenoid is an electro mechanical device consisting of enameled copper wire wingdings wrapped around a non-magnetic tube. When the coil is traversed by an electric current , the magnetic field created pulls any ferrous material into the interior , producing mechanical power .
Learn more about solenoids :http://www.fis.ita.br/fis32/notas/cap11_notas.pdf

Marble Machines or machine marbles are projects that consist of a closed circuit, where a marble or a metallic ball has to travel a certain route , avoid obstacles and be transported to various levels. All autonomously, repeating the cycle indefinitely . These gadgets are common in courses or disciplines automation , mechatronics , mechanical , industrial automation, among others, because they can simulate , in an introductory way , the operation of industrial plants and other systems. Such machines are also quite common in the garages of hobbyists
smile emoticon Credits in the video.