The dipping container can be made of any desired material such as plastic, glass or metal. A square or rectangular container is the most desired configuration.The container should be of a size that when you lay your desired part to be processed in the center of the container, you should have two to three inches of space between the sides of the container. Also, the container should be deep enough that when you process your part it will be totally submersed below the water line. Your container can never be too deep, but it can be too shallow.