Ekobots - Magdeburg Hemisphers II

thingiverse

This is an illustration model of Magdeburg Hemispheres. "The Magdeburg hemispheres are a pair of large copper hemispheres, with mating rims. They were used to demonstrate the power of atmospheric pressure by Otto von Guericke, in 1656." This is a model of the original preserved in the Deutsches Museum in Munich. News 6/13/2015 - Added new *.stl files examples Caution this model is very dangerous for children under 8 years, see instructions this text above are a extract of the Wikipedia:wiki article: Magdeburg hemispheres News source of data: Wiki, photos, schematics, and other collected data. Mostly: Wiki: http://en.wikipedia.org/wiki/Magdeburg_hemispheres Commons: http://commons.wikimedia.org/wiki/File:Magedurger_Halbkugeln_Luftpumpe_Deutsches_Museum.jpg Instructions Magdeburg hemispheres Instructions Warning: This scaled model is not a toy, it is inappropriate for children, the parts are small and fragile, very easy to be broken and can cause fatal injuries if aspirated by children. Please look into http://en.wikipedia.org/wiki/Toy_safety http://en.wikipedia.org/wiki/Home_Safety_Council The model consists of two hemispheres, a seal and a valve. Make sure the parts are completely at Z = 0, I still did not print any of the parts. The valve body must be glued separately, the shutter is only fitting. The rings can be pasted in the hemispheres or carefully separated after printing. On the upper hemisphere utilize glue and soft plastic spindles on the housing holes along the ring, see: Warning: Never use a metallic spindles on model (see sec. 1.8 on OpenSCAD code),generate the housing holes and utilize glue and soft plastic spindles is very more secure for you and your public. Remember is only an illustration model. Warning: This model is developed for illustration only. Important: it is not a working model, not supporting the pressures generated by the vacuum inside the body and may collapse if subjected to this effort. The polymer printed model will not support strong efforts, the lack of limits and care in handling can destroy the model. Please read all instructions and keep special attention to Warning information. source of data: Wiki, photos, schematics, and other collected data. Mostly: Wiki: http://en.wikipedia.org/wiki/Magdeburg_hemispheres Commons: http://commons.wikimedia.org/wiki/File:Magedurger_Halbkugeln_Luftpumpe_Deutsches_Museum.jpg Important Note: The data were compiled from the best and most accurate way possible for the authors, but in the absence of the original object for measurements and verification of details this data may not reflect the reality.