It was not so easy to get the printable STL file but after some time I got to some solutions explained in detail in this GGBBook: [url=https://ggbm.at/snsKPbEP]https://ggbm.at/snsKPbEP[/url]

Genesis of the idea "Modeling with GeoGebra". Complete GGBBook: [url=https://ggbm.at/snsKPbEP]https://ggbm.at/snsKPbEP[br][/url][br][br][list][*]Problems / solutions ways to create [url=https://en.wikipedia.org/wiki/STL_(file_format)]STL[/url] files in GeoGebra: [url=https://ggbm.at/rjen4vj2]https://ggbm.at/rjen4vj2[/url][/*][/list] Solution: [url=https://wiki.geogebra.org/en/Surface_Command]Using surface command.[/url][br][br] [br][list][*]Students reaction (It was great, they felt really proud and eager to work.)[/*][/list]