A steam engine as a cardboard model, which is driven by a real boiling vapor - can that work? Yes, but how?
See for yourself: This model is not only for gorgeous looks; it works perfectly!
The boiler (made of corrosion resistant aluminum) has a magnetic relief valve. Flames from 5 tealight candles are shielded by a galvanized wire mesh,
and the steam is passed through a closed tube and foil system, then released over a fireplace.
The power delivery and the safety for boiler pressure remain modest.
Punched card model from sturdy gold-printed cardboard
Aluminum can with screw cap
Spring steel wire:
Perforated discs of 1 mm rigid PVC
Length 30 cm, width 21 cm, height 21 cm.