by michi » Thu Jan 12, 2012 10:26 pm
I've had this happen with Australian and African skins too. Sometimes, they just dry off with this semi-transparent look, for no discernible reason. It doesn't seem to affect sound or longetivity.
The whiteness of the skin is due to the stretch on it, I suspect. Also, the drum is dark inside, so there isn't anything to see through the stretched part of the skin, making it look opaque, even if it actually were slightly transparent.
Another thing I noticed with some skins is that, occasionally, a skin gets this greenish/yellowish hue after I fit it and while it is still wet. The discoloration is only where the skin is stretched over the bearing edge; everywhere else, it looks normal. Once dry, the discoloration remains, but seems to fade a little over time (but doesn't disappear completely).
The effect seems to be linked to particular skins because I have had it happen or not happen with the same shell to which I fitted different skins over time (and I didn't change any other aspect of my reheading technique). If seen this on different shells that I have reskinned repeatedly too. Sometimes, one shell gets it, sometimes another.
My theory is that the discoloration might be caused by some interaction of the tannins in the wood with particular skins, but I'm not certain. (Tannins normally cause dark brown stains, not greenish/yellowish ones.)
The discoloration doesn't seem to affect sound or longetivity.
Has anyone else seen this?
Shorty, it's difficult to see in the image; did you fit a rope loop underneath the skin flap? That is something I do to get a cleaner finish.
Michi.