I recently used DE to help remove oil from an unfinished curly sugar maple stock I had to bend with hot oil and heat guns. It worked pretty well for the heaviest portion. I applied DE, sat the stock in the AZ sun for an hour and then wiped it off and applied another fresh coat of DE. Did this about a dozen times over three days and it removed most of the oil. Wiped it down with denatured alcohol a couple times and continued building from there. I still didn't get all the oil but enough that the acid stain and finish worked fine.