Choosing the wrong blade can cause damage to both your saw and material, so don’t go buying the cheapest blade out there; spend some time researching the market instead on websites like Saw Blades Only to make sure you will get the right blade for your next woodworking project. Moreover, the right blade will provide better, faster cuts.
Buying an inexpensive blade may seem like it will save you money, but it will actually cost you more in the end if you consider all the damage it can cause, so pay attention to the following:
Your new saw blade must match the type of saw you already own or intend to purchase, so you shouldn’t have any problems here as long as you follow the manufacturer’s instructions. Generally, both depend on what you will be using them for. More specifically, a 10” circular blade designed for a table saw cannot be used on a miter saw, even if both saw types use the same kind of blade (circular and 10”), otherwise you risk damaging your gear.
Picking the right size of blade is also important, even though sometimes you may be able to fit a larger blade on a smaller saw. Therefore, if you use a blade that is too large, it will fail to clear the blade guard on a radial or miter saw, or the throat plate of a table saw. Similarly, you won’t be able to make deep cuts when using a smaller blade for your saw type.
Saw blades must also be chosen in accordance with the material you will be cutting, because wood blades cannot cut through metal or porcelain, for instance; attempting to do so can cause unnecessary damage.
Thus, if you need to make some smooth crosscuts, then you should get a crosscutting blade, and if you need a fine finish, get a finishing blade. For long, narrow cuts, make sure to purchase a dado cutting blade to go with your table saw.
If you know you’ll be working a lot with reclaimed wood, then you will need a nail cutting blade to tackle any hidden nails. As far as other materials are concerned, you will need a metal cutting blade for metal, and a dry diamond blade for ceramic and porcelain. Using one type of blade to make various types of cuts will damage both the material and the blade.