Final answer:
The claim that a hacksaw blade requires fewer teeth to easily cut through a pipe is incorrect. A greater number of teeth per inch is preferable for cutting metal pipes, ensuring a smoother and cleaner cut.
Step-by-step explanation:
The statement that the hacksaw blade needs to have few (large) teeth to slice through the pipe with ease is false. When cutting through materials such as metal pipes, a hacksaw blade with more teeth per inch (TPI) is generally more effective. A blade with more, finer teeth will cut smoothly, whereas larger teeth are beneficial for softer materials. The TPI of a blade should be chosen based on the material's thickness and hardness. For example, to cut through thin metal, a blade with 24 TPI may be appropriate. Conversely, to cut softer materials like wood, fewer TPI is suitable. For tougher metals, finer teeth are necessary to reduce the force required for each tooth to cut and to provide a cleaner cut.