For one of the cups I will be using cast iron. So I spent a lot of time trying to find a place that casts with iron. I tried powder hall in edinburgh first. Powder hall mainly casts in bronze, they do use other metals but iron is not one of them. The next company I tried was Ballantine Boness, this company specialises in cast iron perfect for my cup. After contacting the company they informed me that to make the cup it will cost me £800.... a bit out of my price range.
Plan B for the cup was to source Iron myself and have the cup lathed as much as possible to my design and have the cup finished by a cnc lathe.