The difference between TCT 2F straight bit and solid tungsten steel 2F straight bit

1. TCT Double-Edge Straight Knife (Welded)
Advantages: It adopts the design philosophy of "using the best steel for the blade." The blade body is made of tough steel, ensuring overall strength and impact resistance; the blade is made of extremely hard tungsten steel, ensuring wear resistance at the cutting edge. This construction ensures robust performance in heavy cutting and vibration-prone machining environments, making it less susceptible to breakage.

Disadvantages: Because it is welded from two materials, there are microscopic issues with the heat-affected zone and bond strength. Under extreme working conditions, there is a theoretical risk of weld fracture (although the probability is very low). Furthermore, its absolute rigidity and maximum precision are not as high as those of solid tungsten steel knives.

2. Solid Tungsten Steel Double-Edge Straight Knife (Single-Piece)
Advantages: Because it is manufactured from a single material, it possesses all the advantages of tungsten steel: ultra-high hardness, ultra-high rigidity, and exceptional wear resistance. This means:

More stable: Low vibration and crisp sound during machining, achieving mirror-like cutting results.

Longer life: This tool offers significant advantages when machining highly abrasive materials, such as carbon fiber and high-silicon aluminum alloys.

Suitable for high-speed machining: Its high rigidity allows it to withstand higher speeds and feeds.

Disadvantages: Its greatest weakness is brittleness. It requires extremely precise clamping (a torque wrench is essential), and it is sensitive to any lateral impact or interrupted cutting (such as when machining shafts with keyways). Furthermore, it is expensive, and chipping or breakage can be costly.