By Mike Barone Choosing the right tools for a concrete project is essential to both the appearance and the durability of the finished product. In deciding how to choose the right concrete tools, it helps to look at each step of a project, which begins with choosing the right concrete. All concrete is composed of the same elements: Portland cement, sand, crushed rock or gravel and water. However, the elements are combined in varying quantities based on the desired surface appearance and durability of the concrete. Concrete used for indoor projects, for example, usually contains more sediment than rock, giving the concrete a smoother, more cohesive appearance. After choosing the right concrete comes choosing the right forms for it to set in. For outdoor projects, wooden 2 X 4 forms supported by 2 X 2 wooden stakes work fine. For indoor concrete projects, waterproof forms, such as slats of Plexiglas or hard rubber should be used.