Nugget

This CAD model was designed by Oskar van Deventer, copyright (c), 10 January 2026

Nugget is a lumpy piece of 3D-printed gold that needs to be removed from the stone. Despite its organic looks, the puzzle has a quite mathematical basis. The nugget is a modified rhombic triacontahedron, and the hole is a modified decagon. The challenge is to recognise the shape and to orient it such that it drops through the hole. Absolutely no force is required, just gravity.

Here are some links about this design.
https://www.youtube.com/watch?v=jCZmOO0DmP0

Feel free to 3D-print an extra sample to give to a friend, as long as you mention the designer and don't charge money.

If you are planning to sell some samples, then please contact me for a license agreement. The royalty fee is 10% of your selling price.

Please do not upload the design to a commercial service, or redistribute the design in any way other than linking to the YouTube video: https://www.youtube.com/watch?v=jCZmOO0DmP0

Enjoy!

Oskar
8 February 2026

Contact: 
https://oskarvandeventer.nl/index_contact.php?subject=Print%20It%20Yourself


