One is that the propellers and rotors used to lift conventional aircraft are not ... by cutting the circuitry from copper foil using a laser, rather than printing the pattern onto a base.

You can also see it often used to decorate the sides of religious texts. Professional foil stamping machines are often pricey and the cheaper ones you can get from eBay are usually poorly made.

Lift is opposed by the weight of the foil, and drag by tension. Airfoils come in several types of thicknesses and curvatures, and the film shows how a chord is derived from each shape. These ...

It was also the perfect opportunity to test out his latest water toy, a brand new 5’4 Lift Foil. If you’ve ever used one of these electric surfboards, you know there’s a steep learning curve.