|Blade tension relates to how rigid and straight the saw blade is. This made possible by the inclusion of tension rings during the manufacturing process that help ensure the blade keeps its proper form. |
Tension can be lost when blades are glazed and not corrected. When cutting continues on a glazed blade, the material rubs against the the metal matrix instead of the diamonds and produces excess heat. The heat causes the blade the warp and loose tension.
Blade tension is critical for great blade performance and clean cuts. A good rule of thumb when deciding whether or not your blade is losing tension is if you notice the blade wobbling without cutting the material.