Radial engine

You will need:
1 metal shaft that is 4.5 mm thick that can be used for the propeller, Super glue and hobby paint if you want to paint the engine and 4 m4 bolts that is 10 mm long for the stand.

The card that is on the engine stand can be designed as you wish. For example, if you want to add text with facts about radial engines or put on an image on it.

You can of course make it more detailed with cables from the spark plugs or paint the engine dusty so it looks older.