Question regarding using Acetone to remove oil from stock

[King Cobb]

Ok, I am going with the aluminum baking pan with 1 gallon of acetone and aluminum foil lid method. That is all pretty understood.

I also understand that I need to remove the safety rod from the stock and all the metal from the forearm correct?

Also, and here is my primary question, just not wanting to screw this up, the instruction I have read say to wash out the pan and with and soak the wood in alcohol after all the oil is removed. My question is, do I need to use plain old rubbing alcohol or denaturalized alcohol or some other specific form of alcohol? Again, just wanting to avoid screwing up the wood.