Final answer:
To cut round stock without preheating, such as cutting trees for lumber with a two-person crosscut saw, the specially designed teeth of the saw allow for efficient cutting.
Step-by-step explanation:
The step that makes it possible to cut round stock without prolonged preheating involves using the proper tools and techniques designed for cutting without the need for preheating the material. In the context of tree cutting for lumber with a two-person crosscut saw, the design of the saw and the manner in which it is operated by two people eliminate the need for any preheating of the tree. The teeth of the crosscut saw are specially designed to be effective in cutting through wood fibers, making an efficient cut through the round stock of a tree.