My math is too poor.

Explore lumped compliance

A 3D printing accident gave life to a trout

Finally, I was enrolled into a mechanism design course.

Differential, Escapement, and Pendulum

A 3-digit Safe

An ellipse drawer? It’s a Trammel of Archimedes.

Da Vinci’s Catapult

7-year-old Siyuan dreamt of becoming a LEGO designer.