I have been taking my time with the weathering on this structure because there is a lot of detail to add. While the age and material of the structure are important when deciding how to weather the structure, the location and what it is used for can also be very important. This model represents a steel silo for powered cement storage. It would be a couple a decades old and probably repainted only once but is located very near saltwater (the harbor). So rust will be the primary weathering feature. This silo has rivets and lots of them. Just about every rivet head will have some rust on it and many will be so rusty the paint is completely gone.
The rivet heads are the most tedious part of the weathering. I could probably spend months adding rust (2 colors) to each rivet head and then adding a small vertical rust streak going down from each rivet, but I would likely be insane when I finished. So this will have to be good enough.
The next step will be using rust colored powders to blend the rusty areas, When these photos were taken; I had already begun using the powders at the very bottom of the silo. (look at the very bottom row of rivets) Rust blending along the remainder of the structure and cement dust is next.
