Ovation Making Sound Board 1982 Soundboard Patent
4,353,862
1982
Charles W. Kaman, II
US
Manufacturing Process
8 drawings
A method for making a fiber glass fabric reinforced wood sound board for a stringed musical instrument such as a guitar. A sheet of wood is placed in a shallow mold cavity with a layer of finely woven fiber glass fabric overlying the wood surface, impregnated with a transparent curable liquid resin, and cured under vacuum. The process produces a sound board that is highly resistive to cracking and checking, even at temperature extremes, while maintaining desirable sound amplification qualities at lower cost than conventional methods.