This is a beginner's guide to the basics of casting concrete For specific details, search online for how to create concrete casting forms. To cast concrete with lettering and a logo if desired, you need a form, concrete and letters. The form can be on a flat surface, into which you can pour your concrete, or the form can be erect with a bottom, sides, a front and a back. Be sure to mix sufficient smooth concrete so that a spill or leak won't scuttle your casting pour. Stir and poke the concrete to reduce incidence of air pockets. For the sake of simplicity, this article focuses on using a flat form or pan for making pavers. After deciding on the form or pan shape and size, follow the basic preparation instructions. I Reverse-cast metal letters with a 7-degree draft for casting f you're casting pavers , especially those with a pattern, design or wording combination, you'll likely want to have a reusable form with multiple-use letters. Letters made to be ...