Austria company Mada guitars use spray moulded hemp-celluose bodies. These guitars require no internal bracing.The first functional prototype was made in 2006  and the Mada Caimes model is now available for purchase (with a 3 to 6 month waiting time).
The team behind Mada are designer Adam Wehsely-Swiczinsky, luthier Andi Neubauer and Norbert Schmid.