It is simply be a 50% scaled up version of the old AitT wing. With this model had start with something like the ST-Model Typhoon 430 and ventured in to the land of Hot-wire cutting.

The creator just took some measurements of wing profile and made a template in a fiber circuit board. He then uses a wire that is 0.4 mm and 5A power supply adjustable.

He just made one pivot end and a template to operate by itself. A 3mm depron was built to control the surfaces and winglets.

This one flies better because it flies fast and more snapper even with a lack of fiber and foam.