Ekobots - Magdeburg Hemisphers

thingiverse

This is a demonstration model of Magdeburg Hemispheres. "The Magdeburg hemispheres are two large copper spheres, with interlocking rims. They were used by Otto von Guericke to show off atmospheric pressure's incredible strength in 1656." This model represents the original preserved at the Deutsches Museum in Munich. Warning: This is a very dangerous toy for children under eight years old; read instructions carefully. This text above are extracted from Wikipedia's article on Magdeburg hemispheres News Version: V1.001 - May 02, 2015 - Printed axis Z of the isolated parts corrected; versions V1_001 uploaded. Source data: Wiki, photos, schematics, and other gathered information. Most importantly: Wiki: http://en.wikipedia.org/wiki/Magdeburg_hemispheres Commons: http://commons.wikimedia.org/wiki/File:Magedurger_Halbkugeln_Luftpumpe_Deutsches_Museum.jpg Instructions Magdeburg Hemispheres' Assembly Instructions Warning: This scaled model is not suitable for play, and the components are so small and delicate that they can be easily damaged. Please review these pages carefully: http://en.wikipedia.org/wiki/Toy_safety, http://en.wikipedia.org/wiki/Home_Safety_Council The set consists of two hemispheres, a seal, and a valve. Make sure all pieces are aligned to Z = 0 before beginning assembly. It is necessary to glue the valve separately, since it does not fit together. The rings can either be attached to the hemispheres using adhesives or they can be carefully separated after printing. To assemble the upper hemisphere, apply glue and soft plastic rods through the housing holes along the ring. Please refer to: Warning: Do never utilize metallic rods with model (refer to sec. 1.8 in OpenSCAD code), as it may result in accidents. It's best to use glue and soft plastic spindles on the housing holes for safe results. Warning: This model was made solely for illustrative purposes, and not intended to support pressure generated by a vacuum inside its body; excessive strain or misuse may cause it to collapse. The model made of polymer will break easily under heavy pressure unless handled carefully. Please read all instructions and heed all warnings. Source data: Wiki, photos, schematics, and other compiled information. Mostly: Wiki: http://en.wikipedia.org/wiki/Magdeburg_hemispheres Commons: http://commons.wikimedia.org/wiki/File:Magedurger_Halbkugeln_Luftpumpe_Deutsches_Museum.jpg