Wearable Mecha Series Update

Previously, I designed the exterior of a robot. Then I had an idea: why not make the arm-mounted blade extend outward and grip in your hand? So I created this mantis‑style knife that can pop out its blade and switch forms by swinging it.

It’s a fully 3D‑printed structure with no metal components whatsoever.

**If the blade doesn’t extend smoothly, apply a small amount of lubricant to the rear locking mechanism.**

Materials Used

Renderings

By swinging it, the blade extends outward and can be grasped in your hand.