Creating subaqua life
Could you create an ecosystem underwater? See if you can create life in a bottle with the underwater challenge.
How to build a model machine that flies like a bird.
The prospect of flying has always intrigued man. In Greek mythology Icarus made wings of wax and feathers, but flew too near the sun, melted his wings and plummeted to his death. Early pioneers of flying, including Leonardo da Vinci, studied bird flight and tried to scale it up for humans. They copied Nature’s example and built ornithopters or ‘flapping, flying machines’. In terms of human flight, they were all a resounding failure.
To increase your chances of success, follow the instructions exactly. Instant glue is used except where indicated. Be careful not to get any glue in the moving parts because even if they still move, the glue will cause friction. If any part of the model comes out wrong, fix it before continuing.
All measurements used in this model are Imperial, as most of the components are usually bought in Imperial units.
Stuff you need
Any hobby shop which sells model aeroplanes should have everything you need. Ask your hobby dealer for help if necessary, because substituting materials might result in an ornithopter that won't fly.
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Balsa wood:
- 3/32" square stick
- 1/8" square stick
- 1/8 x 3/8" stick
- Model aircraft plywood, 1/32" thick
- Steel wire, 0.030 or 0.032" diameter
- Aluminium tubing, 1/16" diameter
- Model aeroplane rubber motor, 1/8"
- Model aeroplane tissue
- Thin sewing thread
- Instant glue: thin or fast-penetrating type
- White glue
- Rubber lube
- Razor blade or hobby knife
- Cardboard to cut on
- Needle-nosed cutting pliers
- Waxed paper
- Straight pins
- Adhesive tape
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Content last updated: 02/09/2005








