Molten metal poured into moulds stands for transformation by fire and for giving form to strong feelings. The foundry is read as intense work that shapes something lasting.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.