I agree with everything that Eric said. I would also like to add that the reference you are going off of, are not forges at best they are "greeble" inspiration but they are electrical and mechanical things with dainty circuits and beauty paneling, that aren't really built to withstand the intense heat and weight of molten…
First step should be a 3d blockout model, to get the basic proportions down, and to include all the major shapes (such as that support rod). You can also do a bit of paintover on it to add quick detailing, adjust proportions, try some color schemes. This will help you plan the highpoly model better. The model is looking…