3D printable sensory molds made with Mad Mattr, featuring colorful geometric shapes for creative, screen-free play.

We snuck into the Professor's laboratory and got a treat! Free 3D printable molds for Mad Mattr!

Download and print these "cookie cutter" STL files for some wild and mind-bending fun. Each mold tessellates, meaning it interlocks with another mold or itself to make repeating patterns. They're super cool!

There are four tessellations to make with 6-cutting molds. Each mold has an optional design to imprint and decorate the tops. These aren't required, but they are awesome and help to push the material out of the cutters.

Have FUN and SHARE your creations with us on Instagram!

Here are the files:

Lizard Molds

A tesselating gecko based on the works of M C Escher. Two STL files included in the download. One for the cutter, the second for the details on top, which also, as mentioned above, helps to push the material out of the mold. 

Files

Size
Updated
457 kb
07-28-2025

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License

Lizard Molds by The Professor @ Relevant Play, is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.


Bird Molds

Tesselating birds based on the works of M C Escher. Two STL files in the download. One for the two cutters, the second for the details on top of each bird. 

Files

Size
Updated
1.52 mb
07-28-2025

Download all files  

License

Bird Molds by The Professor @ Relevant Play, is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.

 

Birds & Fishes Molds

Tesselating birds and fish based on the works of M C Escher. Two STL files to download. Two cutters, two files for the details on top. 

Files

Size
Updated
1.52 mb
07-28-2025

Download all files  

License

Birds & Fishes Molds by The Professor @ Relevant Play, is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.


Einstein Tile Molds

Discovered recently, the Einstein Tile is a tessellating shape. Two STL files to download. One for the cutter, the second for the detail on top, which also helps to push the material out of the mold - and it looks really cool! 

Files

Size
Updated
186 kb
07-28-2025

Download all files  

License

Einstein Tile Molds by The Professor @ Relevant Play, is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.

 

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