A circular saw is either a hand held or table mounted tool used for cutting many types of materials such as wood, plastic, metal and masonry. All circular saws have a disc or blade with teeth on their edges. The motor on the saw enables the blade to spin at high speeds, enabling the teeth to smoothly cut through materials.
There are a couple of different factors when choosing a circular saw. First, what is it being used for? As with any purchase, we get what we pay for. Therefore, in order to ensure that tools will last more than 20 years, it is important to choose one with a strong motor. A strong motor will ensure top speed of the blade when cutting through a variety of hard to softer materials.
Because tools are standard purchases for the home, costs are generally known and standard. If you are not aware of amps and horse power as a factor in your decision making, cost could just as well be a reliable indicator. For a few hundred dollars, one should be confident that their tool will last a long time.
Now that you are set up with the saw, the interesting part is determining which saw blade to use for a particular job. Selecting the proper blade for the job will not only allow the tools to perform better and cleaner but also safer.
Generally speaking there are four major categories of circular saw blades. They are: Rip Blades, Crosscut, Combination and Specialty blades.