Another busy day! In the morning, buffed three mouthpieces to be shipped and plated. Looking forward to receiving back from the plater. In the afternoon, Working on SLTC-III 3C ECO Trumpet mouthpiece. It is the first production version of 'ECO' SLTC model trumpet mouthpiece. Turned out to be a great playing mouthpiece, which needs much less effort to play compare to conventional mouthpiece.