Sheet metal benders have become an essential tool to the professional tinsmith. These types of tools act as portable brakes and allow the worker to bend mild steel onsite without having to rely on a heavy brake in the back of the truck or in the shop.
Some benders are especially adept at making 90° bends for flashing and performing repeatable bends, while others are useful when working with radii and curves. There are also hemmers which take your metal from 90° to 180° for various types of locks. Stop feeling restricted to the shop for bending metal and begin bending metal anywhere.