The table saw blade is the most important and often the most expensive part of a table saw. The teeth on the blade are what cut the wood. There are two types of teeth, rip teeth and crosscut teeth. Rip teeth are used for cutting across the grain of the wood, while crosscut teeth are used to make a straight cut with the grain. A table saw blade typically has 10 to 12 rip teeth per inch, with 8 to 10 crosscut teeth per inch.