Summary:
In this video, Jonathan Katz-Moses discusses the difference between a general purpose table saw blade and a combination blade.
A general purpose blade has 40 teeth, all of which are alternate tooth bevel. This makes it a good choice for plywood, jigs, and other thin materials.
A combination blade has 50 teeth, 40 of which are alternate tooth bevel and 10 of which are flat top grind. This makes it a better choice for general hardwoods, as it can both rip and cross-cut effectively.
Ultimately, the best blade for you will depend on your specific needs. If you mostly work with plywood and jigs, a general purpose blade is a good option. If you do a lot of work with hardwoods, a combination blade is a better choice.