A Bernoulli principle-based balloon levitation device, allowing balloons to float in mid-air—a perfect magic prop, children's toy, and conversation starter for family gatherings

This is an enchanting levitating balloon apparatus, capable of even concealing itself from the audience, creating the illusion of a balloon floating by sheer willpower.

Tools and Materials:

1. One 12cm fan, corresponding power supply, and power source. I personally purchased a readily available 12cm 5V 3-wire fan online, paired with a PWM speed controller (https://s.click.taobao.com/wckCa1t), powered via USB
2. Four M4 long screws and nuts; alternatively, eight self-tapping screws from a computer fan may suffice

Part and Layer Breakdown:

1. (Plate 1) Base: The foundation of the entire apparatus
2. (Plate 1) Angle Adjuster - Inner Gear *2: Mechanism for adjusting angles, working in conjunction with the outer gear, mounted on the base
3. (Plate 1) Angle Adjuster - Outer Gear *2: Mechanism for adjusting angles, working in conjunction with the inner gear, mounted on the fan's intake side
4. (Plate 2) Air Deflector, mounted on the fan's exhaust side

Assembly Instructions:

1. Using screws, attach the outer gears of the angle adjuster to the fan's intake side (the two parts are identical; install them as mirror images). Attach the air deflector to the fan's exhaust side
2. Firmly press-fit the inner gears of the angle adjuster into the corresponding slots in the base (the two inner gears are identical; install them as mirror images)
3. Power on the fan to initiate operation

Precautions:

1. For young children, consider installing a protective dust mesh on the fan intake to prevent accidental injury. Numerous 12cm fan dust mesh models are available on this site
2. I utilized a standard 12025 fan running at 1500 RPM. For increased levitation distance and enhanced effect, consider a more powerful fan, such as a 12038 fan or a 12cm industrial fan