A hobby that I have taken up is that of burning wood with electricity. Not for the faint of heart, this process uses 4000 volts to burn a random pattern in wood. In this picture are examples of black walnut (sapwood), cherry, black walnut and another board of sapwood.  All are finished with an oil / wax product from Festool. These will hopeully end up at Artwood in Fairhaven for sale to the public.