Home / Forums / Melodica construction, repair and maintenance / Lubricating oil for melodica mechanisms / Reply To: Lubricating oil for melodica mechanisms Reply To: Lubricating oil for melodica mechanisms October 30, 2014 at 7:03 pm #3337 Alan BrintonParticipant I brought up a similar issue with the Piano 36 I bought recently, though with white keys. A previous owner has apparently addressed the problem by bending shafts, I would guess using two needlepoint pliers. I have a junker on order from which I’ll try transplanting keys. With mine, I think the keys are too close for lubrication to provide even a temporary fix. But food grade silicone is probably the best bet on that.