Accurate pressing is one of the most important parts of the construction process.Having a tool that holds precise, narrow folds and clean angles is critical. And, if that tool allows you to do that without your fingers getting dangerously close to the iron, it's a must-have in your sewing item list! One of our favorite pressing tools, the Hot Ironing Ruler. This ruler is made of super thin, heat-resistant resin with a special non-slip surface.