CIRCULAR SAW BLADE TERMS EXPLAINED

TCT CIRCULAR SAW BLADES FOR BOSCH MAKITA DEWALT HITACHI

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circular saw blades tct wood cutting blades

BLADE TERMS EXPLAINED

E - Expansion Slots. Expansion slots in circular saw blades make room for the blade to expand without distortion due to heat caused by friction during use.

G - Gullets. The space cut out from blade plate between the teeth of a saw blade. The gullets provide room for the cut material to exit the cut.

H - Hook Angle. This is the amount that the tip either leans toward or away from the direction of the blade rotation. A zero degree hook angle means that the face of the teeth are in line with the exact centre of the blade. This is important and we explain this in detail further on.

K - Kerf. Basically the width of the tip. The width of material the blade will remove. For cordless machines this becomes important. We will explain this in detail further on.

L - Kickback Limiters. Some blades us kickback to stop the blade from over feeding. I.e. pulling the material in too fast.

P - Blade Plate. The thickness of the blade that the teeth are attached to. This will vary in relation to the size of the teeth but quite often due to the quality of the blade. The thicker the plate is normally a sign of a quality blade unless use defines the use of thinner plated blades.

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Tooth Configuration

Flat Top (FT) If fast cutting down the grain is your priority then these circular saw blades do the job. Very fast and quick. The flat top tooth is the most efficient design for cutting and raking material out of the cut.

Alternate Top Bevel (ATB) The most common circular saw blade tooth formation. The tips are ground to alternate between a right and left hand bevel. This tooth configuration gives a smoother cut when crosscutting natural woods and veneered plywood. The alternating bevelled teeth form a knife-like edge on either side of the blade and will give you a cleaner cut.

Combination Tooth (Comb.) This type of blade is fairly rare. (4&1) These blades are designed to do both crosscutting and ripping. The teeth are arranged in groups of five - four ATB teeth and one FT -- with a large gullet in between the groups.

Triple Chip Grind (TCG) The TCG configuration is normally found on aluminium and non-ferrous cutting blades but is also excellent at cutting harder materials like laminates, MDF, and plastics. Teeth alternate between a flat raking tooth and a higher "trapeze" tooth.

High Alternate Top Bevel (HiATB) The HiATB configuration is used for extra-fine crosscutting and to cut materials surfaced with melamine, which is prone to chipping. The high bevel angle increases the knife-like action at the edge of the blade.