There’s little I can add to the ammonia method that Keith and others have covered. However, in my friends case he used 1/2 gallon of household ammonia with 2 cups of water added. He soaks his stocks for an hour with periodic scrubbing with a nylon brush. He does not let the wood dry completely, rather he then soaks the stock in laquer thinner for a day to avoid cracks in the wood. This method truly seems to get the deep oil out of the wood. I have tried different methods, including wrapping the stock in brown paper and putting in a 150 degree oven for a couple hours. Results are only so-so. Ammonia and water goes one better. Be very careful of the fumes and only do this out of doors
