I have a heated case made by the manufacturer of my chromatic harmonica, but with that instrument I don’t need to worry about it drying out since it is metal and plastic. I think it would be fairly easy to control temperature using a thermostat, but actively (and electronically) controlling humidity would be much more difficult. What I was considering was making an airtight, temperature controlled case (perhaps snug-fitting in acrylic with a silicone sealed lid): apart from a little moisture escaping from the wood of the recorder into the limited airspace of the case, it wouldn’t be able to dry out much at all, and I expect the water absorbed during playing would counter that loss. Does anyone have any ideas about the viability of making such a case?
