I plan to design a series of toy works called "Interactive Mechanical Boxes". They can showcase some mechanical mechanisms and offer interactive fun.

This work is the first one called “Don't Press Me”. It has a scorpion tail, if you press it, it will attack you with its tail in a rage.

I adjusted the model many times to make it easier to print. It takes only 70 g of supplies and 2.5 hours to print, no support, easy to assemble.

Note: Since the tail and connecting rod are one-piece printed joints, please gently bend them by hand a few times after printing to ensure that all joints rotate freely before installing them

2025.03.28 Addendum 

I upload the .stp source file of the model. You can adjust the model or print configuration to suit your printer and materials. You can also try reducing the print layer height to improve accuracy.