A body portion to be immobilized is wrapped with appropriate padding. Two flexible barrier members are secured to the padding on diametrically opposite sides of the body portion. Successive layers of gauze impregnated with plaster are applied to a sector of the body portion between the barriers, wetted...http://www.google.com.au/patents/US4129127?utm_source=gb-gplus-sharePatent US4129127 - Method of making a surgical cast
