Home / Forums / Melodica construction, repair and maintenance / Refinish of Yamaha P-32D / Reply To: Refinish of Yamaha P-32D Reply To: Refinish of Yamaha P-32D August 10, 2016 at 3:47 am #7469 Melodica-MeParticipant I usually always have some kind of a trial and error period when working with plastic and paints. But one rule I do follow is little paint and lots of dry time and patience.