Free CRL Key Identification & Duplication Questions and Answers — Questions and Answers
Question 1: Which of the following is used to identify the manufacturer of a key blank?
- Bitting pattern
- Head shape
- Manufacturer code (Correct answer)
- Length of key blade
Correct answer: Manufacturer code
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?
- Key bow design
- Cutting speed
- Depth of key cuts (Correct answer)
- Number of grooves
Correct answer: Depth of key cuts
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?
- Laser engraver
- Tubular key cutter
- Manual duplicator (Correct answer)
- Code cutting machine
Correct answer: Manual duplicator
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?
- Ear plugs
- Gloves
- Safety goggles (Correct answer)
- Knee pads
Correct answer: Safety goggles
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?
- Key bow
- Shoulder stop
- Blade profile (Correct answer)
- Key tip
Correct answer: Blade profile
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.
Question 6: What is the primary purpose of a depth and spacing chart?
- Identify key material
- Determine key bow design
- Provide measurements for key cuts (Correct answer)
- Label lock parts
Correct answer: Provide measurements for key cuts
The primary purpose of a depth and spacing chart in locksmithing is to provide precise measurements for key cuts. These charts detail the exact depths and distances between cuts for various lock manufacturers and key systems. Locksmiths use them to accurately cut new keys by code, ensuring the bitting matches the lock's internal pin configuration.
Question 7: Which type of key is typically duplicated using a laser key cutter?
- Household keys
- Automotive high-security keys (Correct answer)
- Cabinet keys
- Padlock keys
Correct answer: Automotive high-security keys
Automotive high-security keys, often referred to as laser-cut or sidewinder keys, are typically duplicated using a laser key cutter. These keys feature intricate internal or external cuts that require the precision of a laser or specialized computer-controlled milling machine. Standard manual duplicators cannot accurately reproduce their complex bitting patterns.
Question 8: Why should a duplicate key be tested in the lock after cutting?
- Check the color match
- Verify smooth operation (Correct answer)
- Clean the machine
- Sharpen the original key
Correct answer: Verify smooth operation
After cutting a duplicate key, it is crucial to test it in the lock to verify smooth operation. This step ensures that the cuts are accurate and that the key can be inserted, turned, and removed without binding or sticking. Testing confirms the key functions correctly and prevents issues for the user.
Question 9: What is the first step in duplicating a key?
- Select key blank
- Align key in machine (Correct answer)
- Polish key cuts
- Lubricate the lock
Correct answer: Align key in machine
The first step in duplicating a key is to properly align both the original key and the blank key in the key duplicating machine. Correct alignment ensures that the cutting wheel accurately traces the bitting of the original key onto the blank, resulting in a precise copy. Improper alignment will lead to an incorrectly cut and non-functional duplicate.
Free CRL Key Identification & Duplication Questions and Answers
Which of the following is used to identify the manufacturer of a key blank?