Mentos Nozzle Cannon

thingiverse

I wanted to make it simple to release Mentos into a 2-liter soda bottle. This design holds 5 Mentos, more than enough for a 15+ft fountain, and has two 1mm holes to fit a paper clip through to keep the Mentos from falling. A screw head attaches easily to the 2-liter bottle with a tapered nozzle on the opposite end. Tie a string around the paper clip and pull it to drop the Mentos into the soda, starting the reaction. A second or so later, soda will erupt out through the nozzle. I suggest using two walls and PETG as material for this design - it's stronger and more water-tight. Have fun with it!