My banjo sees some hard use in the field. About once or twice a year, I wipe and rub the wood with linseed oil. I've got it torn down right now - from a nasty wet overnighter - and I'm wondering what, if anything, I should do to clean and preserve the calf skin head.
I'm not so much interested in removal of the stains as they lend character. I'm interested in extending the life of the skin as much as possible without damaging the tone. Any suggestions?