
- Cut off both ends of a quart-size milk carton. This will be your bubble wand.
- Ask your friends what shape your bubble will be. They will probably guess “square!”
- Dip one end of the carton into the bubble solution, and gently blow into the other end. Watch your friends’ surprise when they see a round bubble!
Behind the magic: All bubbles are round, regardless of the shape of the bubble maker. They try to pull themselves into the shape that has the smallest surface area, which is a sphere.

Bubbles Mainpage Bubble Recipe Bigger Better Bubbles The Bubble Path
Bubble Magic The Predictable POP! The Pop-proof Bubble!
The Square Bubble? Bubblemania: Bubble Sculpture & Bubble Art Bubble Brainer: Boosters & Blasters
Bubbleology: Telescope & Bubblearium Bubble Brainer: Riddle Ode to a Bubble