Choose the right TPI for the material you’re cutting. Higher TPI blades (10-18 TPI) create finer cuts, ideal for thinner materials like sheet metal or wood. Lower TPI blades (4-8 TPI) are better for thicker, tougher materials such as wood beams or metal pipes. This directly impacts cut speed and precision.
Wood Cutting: TPI Recommendations
- Softwoods (Pine, Fir): 8-10 TPI for fast cuts. 10-14 TPI for finer cuts and intricate work. Hardwoods (Oak, Maple): 10-14 TPI for general use. 14-18 TPI for detail work. Plywood/MDF: 10-14 TPI offers a balance of speed and cut quality.
Metal Cutting: TPI Recommendations
Thin Sheet Metal (under 1/8″): 14-18 TPI for clean, precise cuts. Medium-Thickness Metal (1/8″ – 1/4″): 10-14 TPI provides a good balance of speed and precision. Thick Metal (over 1/4″): 4-8 TPI is best for cutting through thicker materials, though speed will be slower.
Experimentation is key! Test different TPIs on scrap materials to find the optimal setting for your specific needs and cutting style. A sharper blade, regardless of TPI, always produces a cleaner cut. Regularly inspect and replace dull blades.
