A variety of CNC machines and specialized boring and electronic lathes are used to accurately machine each of the Vox propellers. Four layers of coating applied to the wood to protect the propeller and to achieve a beautiful gloss finish. Once painted it is precision balanced again to assure a perfect propeller. During manufacturing and upon completion, we perform random checks for accuracy of tracking, diameter, pitch, balance, blade form and finish. If a single propeller is being rejected the entire batch is then tested individually to assure our high quality standards are kept.