Trò chơi Hook & Loop – Hoax Puzzle (Thử thách khéo tay đánh lừa)

This project is a deceptive dexterity game designed as a playful hoax. At first glance, it appears to be a simple skill challenge:
use the hook tool to catch and pull out the elastic loop hidden inside the tube.

However, appearances can be misleading.

The Apparent Challenge

Players are given:

• A rectangular tube with an elastic loop seemingly inside

• A hook-shaped tool to retrieve the loop

The task looks straightforward, yet every attempt fails — no matter how skilled or patient the player is.

⚠ Spoiler / Secret Mechanism ⚠

The elastic loop can never be caught.

By design, the geometry of the tube and the shape of the hook make it physically impossible to grab the elastic with the hook.

The illusion occurs during the demonstration:

• The presenter holds only the cap/end of the hook between their fingers

• By subtly compressing and releasing it, the hook snaps back

• This creates the convincing illusion that the elastic inside the tube has pulled the hook back

In reality, the elastic is never engaged — the effect is entirely mechanical and psychological.

Purpose & Fun

• Designed as an impossible puzzle

• Perfect as a hoax, prank, or party trick

• Great conversation starter and desk toy

• Demonstrates how perception can be manipulated with simple mechanics

3D Printing Notes

• All parts are easy to print

• No complex tolerances required

• Works well with PLA or PETG

• Elastic band is added after printing