Anatomy of a Hat Shaper
Hat Shaper does not
have a "brim", it has a small flat base to provide strength to the
crown. The base is not intended to be a pattern for your brim.
You will, most likely, want to have a wider brim than the flat base
would define. Feel free to make your hat with whatever brim
dimensions that you imagine would look best. You can use your
steam iron to shape it into just about any configuration you desire.
Add-A-Brim, on the
other hand, provides an integral felting resist for a standard
fedora-type brim configuration. The turned down brim can be
flipped to achieve classic fedora brim lines.
Larger Hat Shapers with
Add-A-Brims require additional reinforcement and cost a bit more.