Most table saws use blades that are circular and 10 inches (ca. 25 cm) in diameter and can cut around 1.5 inches (ca. 4 cm) deep. The larger machines have 12-inch blades and can cut as deep as 4 inches (ca. 10 cm). All table saw blades are adjustable, meaning you are able to make cuts that are a few millimetres deep or cut at the maximum depth of the wood. It's useful to identify what cut sizes you will mostly be using before deciding which table saw is best for your needs.