sciencetoymaker | Part 4 Build a Putt Putt/Pop Pop Steam Boat s1 cut top can @sciencetoymaker | Uploaded January 2009 | Updated October 2024, 10 hours ago.
Part 4 is Step 1 of the actual building instructions. Are you confused enough? Sorry! The steps are small. This Step 1 is just cutting off the top of an aluminum beverage can.

You can find more DIY science projects like this at sciencetoymaker.org