This is a master or plug that you can print to make your own silicone moulds for candle making. The design come on a base that has a corresponding wall that you can print and assemble so that you can pour in the liquid silicone rubber and make your mould. I would recommend a good quality tin cure silicone in order to make your mould. Keep the wall part with your mould so that you can use it to hold it together and steady once you have split the silicone to remove the plug / master.
Print with your favorite filament, Filament = ABS Infill = 10% Layer height = 0.2mm Exturder = 245 deg c Build plate = 60 deg c