Making a dulcimer humidity resistant?
Instruments- discuss specific features, luthiers, instrument problems & questions
Ken please stop 'yelling' or I might have to send someone to remove your CAPS lock and exclamation point keys in the middle of the night. Seriously, bro.
Nate, I'm not sure why you'd be trying to reduce humidity during shipping... the dulcimer is going to be all wrapped up in multiple layers during transit and also... what good will it do once the package is opened anyway? It's true that the instrument is going to have to adapt to its environment one way or another. Just my opinion, but right by the sea I don't see how silica or gel bags will provide longterm relief unless the dulcimer spends almost all its time in its case.
They say that it's rapid drastic changes in temps and humidity that harm instruments more than simply a constant environment that's hot, or humid, etc.
I have a good friend who learned the hard way. They forgot their beautiful Martin guitar in the car for an hour on a very hot summer day. Inside the car was over 100F. They rushed it into an air conditioned house and immediately opened the case to check on it. It looked ok. Within one minute that guitar in its open case literally exploded with a huge bang, into a million pieces.
If only my friend had brought the case into the cool house and just left it there for several hours to adjust slowly prior to opening the case , the guitar would probably have been ok. But I digress...
I honestly don't know much about wood, but maybe using hardwoods rather than softwoods in construction will help keep a humid dulcimer more stable? Or perhaps making the back piece a tiny bit thicker to increase structural stability? Just random thoughts.
Banjo players, who struggle mightily with humidity if they have real calf or goatskin heads... sometimes use the old trick of spraying two very light coats of Aquanet hairspray (or one of those art pastel fixative sprays) on both sides of the skin head. This actually does help prevent the skin from absorbing so much humidity from the air that it softens and sags and makes the banjo unplayable. This has worked remarkably well for me on my real skin banjo heads during some very humid summer camping weekends. It doesn't seem to effect the sound either. Makes the skin a little more stiff and waterproof. It does darken the skin a little and makes it more translucent. (which i find attractive)
I see no harm at all in spraying 2 light coats of Aquanet on the inner sides of your dulcimer body wood. We're not talking about a Stradivarius here. It may actually help seal and prevent the wood from expanding/contracting quite as much due to fluctuations in air moisture. I suppose you could spray the outer surface too, but it may create an unwanted finish so best to test first.
updated by @strumelia: 05/24/21 05:49:18PM