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What tooth shape do I need?

Posted on December 17, 2012 at 8:50 AM

Tooth shape is normally something which only crops up when a customer has a problem cutting.  I hope this simple guide will save you having some of the problems I come across on a daily basis.

Flat Top teeth are used on blades made for ripping hard and soft woods. Since wood is much less likely to chip and splinter when it is being cut in the direction of the grain, the focus of a rip blade is to quickly and efficiently remove material. The flat top tooth is the most efficient design for cutting and raking material out of the cut.

Alternate Top Bevel means that the saw blade teeth alternate between a right and left hand bevel. This tooth configuration gives a smoother cut when crosscutting natural woods and veneered plywood. The alternating beveled teeth form a knife-like edge on either side of the blade and make a cleaner cut than flat top teeth.

Combination Tooth 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. These are not a common blade.

Triple Chip tooth configuration excells at cutting hard materials like laminates, MDF, and plastics. Teeth alternate between a flat raking tooth and a higher "trapeze" tooth. The TCG configuration is also used for non-ferrous metal cutting blades.

High Angle Alternate Top Bevel tooth 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.

Categories: TCT Blades