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Daily Archives: September 12, 2014

Variable Pitch Bandsaw Blades

The variable pitch bandsaw blades, their unique qualities and applications, are designed for a particular reason. In this case, it is pitch. Saw blade pitch is defined as the number of teeth per inch — TPI — the number of teeth that come in contact with the material being worked. TPI has the ability to affect both the bandsaw blade’s performance and it durability. Too few teeth in the cut can lead to early stripping of the teeth. Conversely, too many teeth in a cut will greatly reduce the cutting rate and ultimately make the material impossible to cut. The choice of correct …

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Work Hardening and The 701 Series

Work Hardening and The 701 Series of high performance bandsaw blade that ends at 4-6 TPI. Why does this blade end at 4-6 TPI? The difference between the 3-4 and the 4-6 TPI from 5-8, 6-10, and 10-14 variable tooth pitch is the rake angle on the teeth. For the 3-4 and 4-6 variable tooth pitch, both blades have ten° of positive rake teeth, which means that the tooth angles move forward — in the direction of the cutting action. The 5-8, 6-10, and the 10-14 TPI all have a zero° rake angle on the teeth, which means that the harder the blade …

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Bandsaw Blade Set Types

Saw bands vary depending on blade type and also differ based on ability to resist heat and shock when entering and exiting the cut. These are important considerations when cutting structural, pipe, and tubing. An economical choice are the standard carbon steel blades with flexible backs and hardened cutting edges. They are used primarily for crosscutting wood and sawing brass, plastic, and mild steel. More expensive carbide-tipped blades are the essential tool for cutting harder metals, composite materials, and abrasive hardwoods such as teak. Bi-metal blades require more blade tension than most consumer-level machines can provide. A bandsaw blade’s resistance to flexing …

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