Published at Friday, 18 January 2019. Industrial Machinery. By Alair Le.
Blade RPM. The maximum speed of a blade is usually expressed in RPM (revolutions per minute). One thing you need to look for is the speed of the table saw, which must never exceed the speed of the blade. Blades are designed to rotate at a certain speed, and using it on a table saw which exceeds that speed will cause the blade to break apart due to centrifugal force. This is pretty much everything you need to know about blades. If you decide you want to learn even more about blades and their properties, this should serve as a good base for you to build upon.
In the past, table saw blades were meant to cut only wood, but they are now able to cut through metal, plastic, and other materials. Mind you, most blades are still fabricated out of metal, but some also feature special alloys and materials in the teeth, and various carbon composites for the body. Before deciding on a blade, you need to look at several characteristics such as its diameter, the material it's made of, the material it's designed to cut, number of teeth, maximum speed, and price, among others. Of course, the blade needs to match your table saw as well. Now, let's see how you do all that.
Blade Teeth. Blade teeth the more teeth on a blade, the smoother the cut. The majority of blades have between 24 and 80 teeth, expect for blades specifically designed to cut through certain materials. Why would you go with more or fewer teeth? More teeth ensures that the cut is smoother, but it also means the cutting will be done more slowly. Fewer teeth means faster cutting, but the cut will be rougher. A word to the wise: Do NOT EVER attempt to make the cutting faster by pushing the wood onto the blade. The only thing this will do is cause kickback, which will eject the wood back at you at a high rate of speed and potentially hurt you severely. So just be patient.
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