True or False: Standard reamers and step reamers have a non-cutting pilot, requiring a pilot hole to be drilled first.

Standard reamers and step reamers are designed with a non-cutting pilot that does indeed require a pilot hole to be drilled initially. This requirement ensures that the reamer is guided accurately and maintains proper alignment during the reaming process. The pilot hole acts as a guide, allowing the reamer to enlarge the hole to a precise diameter without drifting or causing damage to the surrounding material.

The use of a pilot hole is crucial because it helps to control the cutting action, providing a smooth and accurate finish. If a pilot hole is not drilled first, the reamer may not function effectively since the non-cutting pilot cannot center itself in the material, leading to inaccurate machining and potential damage.

While there are different types of reamers, the need for a pilot hole is a characteristic feature of standard reamers and step reamers alike. This understanding is critical for anyone working in aerospace mechanics, as precision and accuracy are paramount in assembly and manufacturing processes.