I am sure I have suggested before using a electrically heated gardeners seed propagator along the lines of the one in the photographs. They get hot enough to make the oil flow too the wood's surface though not hot enough to cause any heat damage to the wood. I prefer to surround the stock with cat litter to absorb the oil coming out of the stock though toilet tissue works well also kitchen paper towel, changing the most oil soaked litter or tissue as necessary. This method is not fast but it is extremely thorough I have left really bad cases in the propagator for four months with no problems.
