The hardness, density and toughness of the material are key factors in determining the choice of Round Oscillating Multitool Saw Blades. For example, wood, as a relatively soft material with a distinct fiber structure, usually requires a saw blade with a larger tooth shape and a wider tooth pitch. This design can quickly remove wood chips generated during cutting, avoid clogging of the saw blade, and improve cutting efficiency. For hardwood or wood with higher density, a more wear-resistant saw blade material, such as carbide, may be required to ensure that the saw blade remains sharp after long-term use.
Cutting of metal materials places higher demands on saw blades. Metals are generally hard and tough, so saw blades with smaller teeth and closer tooth pitch are required. This design can reduce the load on each tooth and avoid overheating or premature wear of the saw blade. Metal cutting saw blades are usually made of carbide, and in some cases even use saw blades with special coatings to enhance their wear and heat resistance. For difficult-to-process materials such as stainless steel or alloy steel, specially designed saw blades may be required to ensure cutting accuracy and efficiency.
Cutting of plastic materials is between wood and metal. There are many types of plastics, from soft polyethylene to hard polycarbonate, and their cutting requirements vary. Generally speaking, a saw blade with a medium pitch is suitable for cutting most plastic materials. Too large a pitch may result in a rough cut surface, while too small a pitch may cause the plastic material to melt during the cutting process, affecting the cutting quality. Therefore, choosing the right pitch and tooth shape is crucial for plastic cutting.
For extremely hard materials such as stone and ceramic, traditional saw blade designs are often not up to the task. Such materials usually require diamond-coated saw blades. As the hardest material in nature, diamond can effectively cut stone and ceramic while maintaining a long service life. The design of diamond saw blades usually adopts a continuous edge or a segmented design to ensure heat dissipation and chip removal during the cutting process.
In addition to material properties, tooth shape design is also an important factor affecting the cutting effect. Common tooth shapes include flat teeth, bevel teeth, trapezoidal teeth, and combination teeth. Flat tooth design is suitable for fine cutting, such as plastics or thin metals, and can provide a smoother cutting surface. Beveled tooth design is more suitable for soft materials such as wood. It has a faster cutting speed, but the cut surface may be rough. Trapezoidal tooth design is often used for metal cutting because of its high strength, good wear resistance, and ability to withstand greater cutting forces. Combination tooth design combines the advantages of multiple tooth shapes and is suitable for cutting a variety of materials with high versatility.
The choice of tooth pitch (TPI, i.e. the number of teeth per inch) is also crucial. Low TPI saw blades (6-20 TPI) are suitable for soft materials and fast cutting, such as wood; medium TPI saw blades (20-40 TPI) are suitable for medium hard materials, such as plastic or thin metal; and high TPI saw blades (40-80 TPI) are suitable for hard materials and fine cutting, such as thick metal or stone. The choice of tooth pitch not only affects the cutting speed, but is also directly related to the quality of the cut surface and the service life of the saw blade.
The material of the saw blade is also one of the key factors that determine its performance. High-speed steel (HSS) saw blades are suitable for cutting wood and plastic, and have high toughness and wear resistance; carbide saw blades are more suitable for cutting metal and hard materials because of their high hardness and good heat resistance; and diamond-coated saw blades are specially designed for extremely hard materials such as stone and ceramics, and can provide excellent cutting performance and service life.
