Free CRL Key Identification & Duplication Questions and Answers

Question 1

Which of the following is used to identify the manufacturer of a key blank?

Accepted Answer

Manufacturer code

Answer

The manufacturer code is used to identify the maker of a key blank. This code, often stamped on the key bow or head, helps locksmiths determine the correct blank to use when duplicating a key or originating a new one. It ensures compatibility with the specific lock's keyway and internal mechanism.

Question 2

What does the term 'bitting' refer to in locksmithing?

Accepted Answer

Depth of key cuts

Answer

In locksmithing, 'bitting' refers specifically to the series of cuts or indentations on the blade of a key. These cuts correspond to the varying lengths of the pin tumblers inside a lock cylinder. The precise depth and spacing of these cuts are what allow the key to align the pins correctly and operate the lock.

Question 3

Which machine is most commonly used for duplicating standard house keys?

Accepted Answer

Manual duplicator

Answer

A manual duplicator is the machine most commonly used for duplicating standard house keys. This machine works by tracing the bitting of an original key with a guide and simultaneously cutting a new blank key to match those depths and spacing. It's a widely used, efficient, and cost-effective method for creating copies of common mechanical keys.

Question 4

What safety equipment should be used when operating a key duplicator?

Accepted Answer

Safety goggles

Answer

When operating a key duplicator, safety goggles are essential safety equipment. The cutting process generates small metal shavings and dust, which can be propelled into the eyes. Safety goggles protect the eyes from these airborne particles, preventing potential injury and ensuring the operator's safety.

Question 5

Which part of a key blank determines compatibility with the keyway?

Accepted Answer

Blade profile

Answer

The blade profile, also known as the keyway, is the part of a key blank that determines its compatibility with the lock's keyway. The unique shape and milling of the key blade must precisely match the internal contours of the lock cylinder's keyway for the key to be inserted and operate correctly. This ensures that only keys designed for that specific lock can enter.

CRL - Certified Registered Locksmith Practice Test

CRL - Certified Registered Locksmith Practice Test

Free CRL Key Identification & Duplication Questions and Answers