Get smart curated videos delivered to your inbox every week.      
The Kid Should See This

Three LEGO soap bubble machine ideas

Looking for some LEGO invention inspiration? Check out this LEGO soap bubble machine or Seifenblasen Maschine, a 2006 project by Johannes Gysel.

A rotating wheel of six bubble wands are dipped into a small vat of soapy liquid. As they pass in front of a small, motor-powered turbine, bubbles fly into the air. This machine is set to the music of French musician and composer Yann Tiersen.

lego bubble machine
Here’s another LEGO bubble machine, a Technic prototpye with a Lego Power Functions motor. It was created by Kevin Vanderwall for his kids. He explains:

It is all about gear ratios. Basically, for high speed, you want to use a large gear on the motor shaft (the “input”) which drives a small gear on the fan shaft (the “output”). Do the opposite to achieve a slower output speed, such as the one that actuates the bubble wand in this case.

bubble machine

This third version by Matze Glatze on YouTube directs air to the thread-covered bubble wands. There were multiple versions of this machine before this successful one was completed.

lego bubble machine

There are more LEGO videos and soap bubble videos in TKSST’s collections. Watch these soap-driven videos next:
• Bubble Bot: A robot built for blowing massive bubbles
• Bubble Device #2
• How bubble engineer Melody Yang makes mind-blowing bubbles
• How to make geometric bubbles
• How to make an inverted bubble

This award-winning video collection is reader-supported. Become a sustaining member to keep TKSST online and free for everyone, including teachers and parents who use it as a resource to spark learning and curiosity for kids.