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Tag Archives: tooth pitch

Tube Cutting

Cutting tube is more difficult than sawing solid bars. The bandsaw blade is performing two types of cut, sawing solid as it enters the material then entering the hollow tube. The blade is now cutting two thin solids with a space in between — an interrupted cut. To achieve the best result in cutting tube, blade variables and bandsaw settings have to be carefully selected. Tooth pitch (TPI) is an important variable as well. The number of teeth engaged with the material determines both blade performance and durability. A few teeth in contact with the material can lead to stripped teeth, bending, or premature …

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Materials Variables

One of the variables to a quality cutting process is materials. The quality of cut can vary depending on a variety of factors, but materials and quality output are something to consider. Blades are built for the type of the materials being cut, the dimension of the materials, and the materials characteristics. Type of material may refer to ferrous or non-ferrous, with ferrous metals being harder since alloys are added during the steel making process. As the cut process completes, alloys become harder with the saw continuously cutting through. These types of materials require stronger blade teeth with smaller tooth gullets if a productive cut is to be achieved. …

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Saw Blade Stripping and Breakage

Stripped bandsaw blade teeth is a common problem, and there are several causes to consider. A big factor includes use of the incorrect tooth pitch. Too small teeth for the size of the material fills gullets halfway through the cut. Pressure builds on a single tooth until it breaks and becomes lodged in the cut. Now the other teeth come in contact with the broken tooth, resulting in more broken teeth. Follow the m.o.m. rule: Minimum, Optimum, Maximum, which requires a minimum of 3- and a maximum of 24 teeth engaged in a cut in order to achieve the best …

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All About TPI (teeth per inch)

Here at Sawblade.com, questions arise with regard to perceived saw blade problems. After a few inquiries, it can be determined if the machine operator made any miscalculations with speed and feed, the materials being cut, TPI, and any other variable that ends up impacting the cutting process. In most cases, the customer already knows exactly what is needed. The operator knows the blade size, length and width, the thickness of the blade being ordered, and they know the materials to be cut so there is often no need to ask about carbon, bi-metal, or carbide blades or the proper tooth pitch required for that particular job. There …

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