sciencetoymaker | Part 5 Build a Putt Putt /Pop Pop Steam Boat s2 cut middle can @sciencetoymaker | Uploaded January 2009 | Updated October 2024, 2 hours ago.
Part 5 is Step 2, cutting and trimming the middle part of the can so you have a sheet of aluminum to build the engine with.

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