Millwright Level 1 Practice Exam 2026 - Free Millwright Practice Questions and Study Guide

When installing a taper shank drill into the spindle bore, ensuring that both the taper and the bore are clean is essential. The presence of dirt, chips, or contaminants can prevent proper contact between the mating surfaces, which may lead to improper seating of the drill. A clean surface ensures a firm grip and correct alignment, reducing the risk of slippage during operation and ensuring that the tool operates safely and efficiently.

The other precautions, while they may seem relevant, do not contribute positively to the correct installation of the taper shank drill. Using excessive force could damage either the drill or the spindle bore, leading to misalignment or a compromised tool. Removing the chuck beforehand is not necessary when installing a taper shank drill, as the drill can be inserted directly into the spindle without needing to remove the chuck. Keeping the drill in a warm environment does not directly affect the installation process or improve the fit of the taper in the spindle.