Disclosed is a method of preparing a thin core substrate for fabricating a build-up multilayer circuit board. The methods are applicable to treatment of a wide variety of conditions including burns, bedsores, ulcers, necrosis and anaerobic infections. , data storage systems, data communication systems, DVD systems, systems that use media subject to a d=2 minimum run-length constraint, etc. It utilizes a stand that is most likely to be already in use therefore eliminating the need for another stand while providing the convenience of the holder.