Circular saw blades are commonly used cutting tools that can be installed on various saw machines, such as circular saws, table saws, miter saws, and panel saws.
At the same time, they are capable of cutting a variety of materials, including wood, metal, plastic, and more.
With the right blade, you’ll get smooth and quality cuts.
Several factors need to be considered when selecting, including size, number of teeth, tooth geometry, cogging, anti-kickback and rake angle, the most important of which is the choice of tooth geometry.
Therefore, choosing the best blade for your job can be quite confusing and difficult. But don’t worry, in this article we’ll take a closer look at circular saw blade tooth geometry and discuss which shape is suitable for which use.
Tooth grinding refers to the shape of each cutting tooth on the circular saw blade, which directly affects the cutting performance.
There are several types of gear grinders designed for different purposes.
When selecting blades, determine what the specific application scenarios for each type of blade are. Some common types of teeth grinding include:
Flat Top Grinding (FTG)
FTG blades feature flat tops and square teeth, two tooth profiles combined on the same circular saw blade; ideal for ripping and fast rough cuts.
Triple Chip Grinding (TCG)
The teeth of the TCG blade have alternating flat-topped teeth and beveled-topped teeth.
Helical teeth rough out the cut, then flat-top teeth clean it up.
So TCG is usually used to cut dense materials, including plastics, aluminum, solid surfaces, etc.
Alternate top bevel grinding (ATB)
This type of grind has teeth that alternate between left- and right-angled angles, creating a sharp point at the top of each tooth.
ATB blades produce clean cuts due to the shape of the teeth, resulting in shearing cuts. ATB blades are often referred to as general-purpose blades and are ideal for cross-cut lumber, melamine, veneer, and plywood.
Alternate Top Bevel with Rake (ATBR)
ATBR blades come with multiple sets (usually 10) of 5 teeth (4 alternating bevel teeth or ATB followed by a rake tooth or FTG).
The ATB teeth cut through the wood fibers and the FTG teeth help remove sawdust.
ATBR blades are considered general purpose blades due to their toothed grinding and are ideal for crosscutting.
Overall, the choice of circular saw blade tooth grinding depends on the specific cutting application and the material being cut. Different tooth grinds can affect the speed, quality, and accuracy of your cuts, so it’s important to choose the right blade for the job.
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