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How to make a forcefield

... are venturing bravely into the future to make their very own forcefield. Providing the man power to do it are Matthew ...

Build your own helicopter

Build your own helicopter ...

The compass is formed by floating the magnetised needle in the centre of the bowl

Build your own Compass

Build your own Compass ...

The squash ends up under the water

Mixing two fluids of different densities

... me as very strange that they don't mix together of their own volition. Herbert - If I took a relatively heavy tennis ...