What did you do to lower iron? Usual coffee and blood donations?I'm sure sweating (or excessive sweating) can have a number of factors, but I think salt intake, heat (internal body heat or external), and thyroid status are the three biggest. I remember one time when I took too much T3, I was sweating quite a bit.
Another thing that I've noticed with sweat, is that it tends to smell really bad if you are loaded with iron. As I went through the process of lowering body iron stores, most of the smell would go away. Gym clothes used to be RANK when I was loaded with iron. Now, a if I have a shirt that gets really sweaty, it only smells a bit musty even days later.