Old fashioned whiting mixed into a paste with acetone. Cover the wood with it and the acetone will pull the oil out and the whiting will turn a brownish gray as it absorbed the oil. Brush off the whiting and repeat. Putting it in the oven with the whiting mixture on it will better draw the oil out. Soaking the stock rich in acetone or MEK will work well for getting surface oil and dirt off, but the whiting and heat is best for pulling the deeper stuff out.
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B. Dudley
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