A cast iron hickey is a component used in lamp making. It is a small, forged piece of metal that is used to secure and join two pieces of metal together. Cast iron hickies are often used in the construction of furniture, machinery, or other metal structures, and provide a strong and durable connection between two pieces of metal. They are made from cast iron, which is known for its strength and durability, and are often shaped in a variety of ways to meet the specific needs of the project they are being used for. Cast iron hickies are an essential tool in lamp making, and play a critical role in ensuring the strength and stability of metal structures.