Stemfie3D
The 3D-printable construction set toy you can download and make at home.

Stemfie3D
The 3D-printable construction set toy you can download and make at home.
STEMFIE - Desktop Catapult (SPS-000003)
Here is a simple test of 3D-printable gears which are compatible with the STEMFIE construction set toy.
The STEMFIE 3D-printable rubber band-driven toy car