Final answer:
The best saw for accurately cutting 3 inches off the length of a 2 x 8 x 18 inch piece of lumber is a miter saw. A miter saw is a specialized tool used for making precise cuts at various angles, allowing for accurate length adjustments.
Step-by-step explanation:
The best saw for accurately cutting 3 inches off the length of a 2 x 8 x 18 inch piece of lumber is a miter saw. A miter saw is a specialized tool commonly used in woodworking for making precise cuts at various angles. It allows the user to adjust the blade angle and position, providing the flexibility needed to cut the lumber accurately to the desired length. With a miter saw, you can easily set the required length and make a clean, straight cut, ensuring accuracy and precision in your woodworking project.