Hi, At our annual summer camp this year we are making rolled candles from beeswax. We have made a rubber mold of a bee foundation board to get the octagonal texture. Now we need to pour melted beeswax into them. Our question is.....can we use a double boiler and add a drop of mango scent to the melted wax? At what point do we do this? Is the wax melter usable as a food cooking utensil once the project is finished or does melted wax "ruin" the inside finish after several uses? (We just bought a new stainless steel double boiler for this project and hopefully home use afterwards?) Thanks for your answers.