You can use this mold to make custom shape candle like the one in the picture.I use 3 sheet 5mm plexiglass to make the mold. The settings that i use is feed: 1000mm/m speed: 6500rpm depth per pass: 1.3mm tool: 3mm single flute carbide end mill. You can probably 3dprint it but you must brake it in two or three layers in order to remove the candle easy with out breaking it.