Hi all Depending how big your part is....... I use regular high quality spray can paint like duplicolor car enamel & bake it in my regular house oven. The finish comes out like glass & super smooth with excellent hardness. Bake at about 125 to 135 degrees for about 20 minutes ....let the paint air dry about 10 minutes before putting in oven to allow the solvent to flash off !! 73 John