I have been looking at alternative materials to wood for some time now and after many trials Acetal ( also known as Polymer or by the Trade name Delrin) seems the most suitable for flute
making. It is strong and tough, resists moisture and is not affected by large changes in temperature. It is also consistent and predictable when worked - no hidden suprises such as cracks,
knots or faults that can appear in any wood.
So why an alternative to wood? Because of its properties and its relative cheapness it allows a flute to be made more quickly and at less cost than one in wood, the finshed flute will be more affordable.
The Acetal flute is available in D with or without a tuning slide.