I am restoring my wife's late grandfather's old brush, and I have a question. What can I do to clean the bottom part of the handle? I don't know if you can tell by the pictures or not, but there is black crud stuck in that seam at the base of the handle. I really don't want to screw this up because my wife will kill me, but is there something I can soak this in to get it out? The seam is too small to get anything in there and clean it out by hand. Any suggestions would be appreciated.
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