I have successfully shaped my wool Tilley Town Fedora last weekend. The front had a tendency to flip up easily, basically at the slightest touch and I wanted it to have a downward turn at all times. After putting up with it since I bought it the week after Christmas, I'd had enough.
I filled the tea kettle with water and brought it to a boil. We have a "whistling" tea kettle so I got a nice jet of steam going. I reasoned that I wanted to basically cause the wool to shrink after wetting it, so to get a more pronounced downturn I wanted to steam the underside of the brim.
I CAREFULLY, a little at a time, steamed the edges and the actual underside of the brim. Best guess... I never held any single spot in the steam longer than a couple seconds. After working it for less than a minute total I hung it up to dry.
It worked. The brim has a slightly more pronounced down turn than before and best of all when I flip it up, it flips back down on it's own.
I was a little hesitant working on an $80+ hat but had reached the point where if I couldn't fix it I wasn't going to wear it anymore. I am completely happy.
Proud HIGHLANDER 2013, BOTOC, and Cult of Arko member.