What material is the core bit typically made from?

The core bit is typically designed for cutting through hard materials such as concrete, brick, stone, and masonry. As such, the correct material for a core bit needs to withstand significant wear and stress during use. The core bit is usually made from high-speed steel or designed with a matrix that includes diamond segments.

The composition of pipe or hollow tubing as the core bit allows for a lightweight structure that can still provide the necessary strength, making it effective for the drilling process. This design also facilitates the removal of the core material that is being drilled out, thereby enhancing the efficiency of the operation.

The other materials listed, such as wood or plastic, would not provide the required durability or strength for cutting through hard materials. Steel or aluminum may be used in some lighter drilling applications, but they lack the necessary hardness for efficient core bit operation. Composite materials might be employed in certain applications, but they do not typically characterize the standard core bit. Thus, the use of pipe or hollow tubing is the most appropriate choice for the construction of a core bit.