Press-fit tubing-attachment flange for CO2 bubbles experiment.

thingiverse

I constructed a flange for attaching tubing onto a plastic jar, which I press-fitted in place. This allowed me to create a CO2-mist source for blowing bubbles. The boys and I had an amazing time with these unique bubbles! To use it, simply cut a hole in the jar, attach the tubing to the flange, clamp the jar, add water and dry ice, seal the lid, and blow bubbles using the CO2-mist stream at the end of the tubing.