DEWALT DW3981 Bi-Metal Band Saw Blades
The DEWALT DW3981 is a 44-7/8-inch portable band saw blade with a Matrix II high-speed steel edge and 8% cobalt content. This bi-metal blade is built to withstand extreme heat and wear, making it a reliable choice for cutting metal in portable band saws. With 10 TPI, it delivers clean, fast cuts in thin to medium steel and other metals.
DW3981 Material Thickness Chart
Choosing the correct TPI is essential for optimal cutting performance. A 10 TPI blade is best suited for materials from 16 gauge up to 1/4-inch thick. Here's a quick guide:
Material ThicknessRecommended TPI16 gauge (0.0625")10 TPI1/8" (0.125")10 TPI3/16" (0.1875")10 TPI1/4" (0.25")10 TPI (good)
For material thicker than 1/4", consider a blade with fewer TPI (e.g., 6 or 8 TPI) for better chip removal and less blade stress.
What to Cut with the DW3981 Blade
This 10 TPI blade excels at cutting thin steel, aluminum, copper, and other non-ferrous materials. It's ideal for HVAC work, electrical conduit cutting, and general fabrication. The Matrix II edge with 8% cobalt provides excellent heat and wear resistance, extending blade life.
Built for Durability
With an alloy steel backer that resists fatigue and a tooth hardness of Rc 65-67, the DW3981 is designed to withstand the demands of daily use. The bi-metal construction combines a high-speed steel cutting edge with a flexible backer, reducing breakage and improving cutting control.
Pair withDEWALT DW3982B 14 TPI Portable Band Saw Blades (100-Pack)$93.53
