A quality saw blade is an integral key to finish a successful woodworking project. Dull blades or improperly tensioned blades can result in inferior cut quality or accidents. That’s why it’s important to check the quality of the diamond blades you are purchasing.
To help you with that, we listed down six factors you should inspect to check the quality of your diamond blade:
First and foremost, inspect the saw blade’s tooth. You see, the blade’s tooth profile and the straightness of its grind can significantly affect the cut quality. It also factors into the blade’s speed and the type of material it can cut.
Gullet Shape and Size
The gullet size and shape of your diamond blade will determine the amount of waste material that can pass through the saw equipment. Too much mess buildup can cause your saw equipment to overheat and ruin the blade.
During manufacturing, saw blades are already pre-tensioned to take on a true, flat-shape when spinning. You can check the blade’s tension and authenticity by thumping it with your finger while suspending it through the hole. An authentic saw diamond blade will emit a little ring sound. The louder the ring, the more standing wave the blade has, which is a sure sign of a saw blade deformation and can cause an hourglass-shaped throat plate cut.
The typical plate thickness of a saw blade is usually around 1/8 to 1/4 inch. Thinner blades create less sawdust and potentially less waste but are very sensitive to heat and wobbling. While thicker blades have a longer lifespan and allow you to cut more materials.
The hook angle can determine the quality of your cut especially when crosscutting. The greater the hook angle, the rougher the cut. While a smaller hook angle, the more force it takes to be able to push the blade into the wood. Crosscutting saw blades should have a hook angle of around 10 degrees to 15 degrees.
The blade’s flatness is important to avoid any cut deformation. There shouldn’t be any sizeable wobble or drift and should be flat when mounted on its arbor. A dial indicator can help you check the blade.