Oklahoma Locksmith Practice Exam

Which key blank material is known to produce the most obvious marks?

1. Aluminum

2. Steel

3. Brass

4. Copper

The correct answer is: Brass

Brass is known to produce the most obvious marks when cut or manipulated. This is primarily due to its softer nature compared to steel, which allows for more noticeable indentations and scratches during the key cutting or filing process. Additionally, brass has a distinct yellowish color that contrasts well against most surfaces, making any marks more visible. When working with brass key blanks, a locksmith can easily see the results of their work, allowing for finer adjustments and ensuring that the key fits properly into the lock. This characteristic makes brass a preferred material in many locksmithing tasks, as it provides better feedback during the cutting and fitting processes, enabling the locksmith to achieve greater precision.