I consider this a part, not an accessory. It comes with it, it's virtually essential to it's use. An accessory would be something not necessary that you buy afterwards. I agree, for the most part, with your assessment of the BBB, however, they are helping here, and it pays to make the most stink on this as possible. I can tell you from YEARS of experience, the squeaky wheel gets the grease, and the louder the squeak, the more it's heard. Good looking out on your plan to make molds. If they work out, let us know.