This post will discuss everything you need to know when buying a circular saw
TYPES OF BLADES
High-speed steel blades are harder than steel blades
Carbide-tipped blades have carbide tips
Tile-cutting blades are specially designed for cutting ceramic tile. Better tile-cutting blades have diamond-tipped blades
Masonry blades are made of abrasive material for cutting concrete, brick, cinder block and other masonry materials
Choosing Corded or Cordless?
These days you can get corded or cordless circular saws