All materials in the Free Download section can be freely used for non-commercial educational purposes. The only condition of use is a clear indication of the source of this material Credit: with hyperlink (digital and online media), or printed ”Credit:” (in case of printed or off-line media). Breaking this license agreement will be prosecuted for copyright infringement. For commercial use contact us at [email protected]

We love to work on educational projects. We can offer expertise and long-term experiences in this field for you. Don't hesitate to contact with your brief/ideas the director of Simopt Mr. Michael Sovadina [email protected] We are looking forward to creating amazing 3D models and educational projects for you.

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All 3D models in the section Free downloads are free of charge. Just remember to keep the logo on the models. The 3D models are designed for beginners and advanced printers.

Each 3D model has pdf instructions for easy assembly (illustrated assembly guide). Download the STL files for free printing on regular 3D printers.

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Flask resistance


The flask for transporting radioactive waste must be able to withstand free fall from 10 meters, fall on the steel pin, submersion to a depth of 15 metres and temperature of 800°C.


3,840 x 1,600 pixels

Free download