A work in progress, this is another invention designed on a shoestring budget. Here I made two molds, one for each of the windward and leeward skins. Carbon was vacuum bagged into the molds. The end result was full carbon, semi-rigid wingsail. For lack of funding the project remains half complete...

The picture to the right shows the scrap removed from the Styrofoam block to create the mold cavities.