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Working with wood can be challenging enough with out having to be fighting tools as well. One of the drawbacks of working with wood is that it is always moving due to moisture in the air that wood is constantly either absorbing or releasing depending on the humidity.
As woodworkers we are always striving to make the most accurate, and straightest cuts we can and that is why we purchase expensive machinery with highly accurate fences and micro adjustments, so that we can make perfect cuts. The reason we want perfect cuts is the wood is MUCH easier to work with when we work with flat, straight and right angle cuts. When these cuts are bad, wavy rough or otherwise at some sort of an angle, it either means wasted wood, or having to re-do of fill something, which costs more time and money.
One of the best investments is purchasing excellent quality table saw blades. Even if your saw is not the best in the world, you can still make excellent cuts if you have an excellent blade to work with. One of the features of a good blade is reduced vibration during cutting. A blade that is "dead" is far more likely to product a good, straight and accurate cut that one that wants to vibrate.
We decided to test some Freud blades with their non-stick Permashield trademark coating to see if this actually make any difference to the "resonance of the blade" ... have a look a the video and you will see that an excellent quality "dead" blade is not created that way with coating, but during the actual manufacture of the steel. There is no substitute for good quality tools