Ramdom Clock Talks - Vol 13 Cutting Wheels

Exploring Cutting Wheels: Ramdom Clock Talks Vol. 13″ – A Blog Post

Welcome to our thirteenth volume of “Random Clock Talks,” where we delve into the innovative world of cutting wheels. In this blog post, we will be exploring the various types of cutting wheels that are essential to numerous industries and discussing their unique features. So, whether you are a professional in the construction industry or an individual who is simply curious about these remarkable tools, this article is a must-read. Let’s dive in and explore the fascinating world of cutting wheels together.


Traditionally, clockmaking has always been a revered skill and an art form. It takes a significant amount of ingenuity, patience, and attention to detail to create an exquisite and functional timepiece. Among the many tasks involved in the craft of clockmaking, cutting clock wheels is one of the most intricate tasks.

In this blog post, we will explore the complexities of cutting wheels for AWI certification and delve deeper into the topic using Volume 13 of Random Clock Talk by JM Huckabee as a reference. Huckabee is a certified master clockmaker by the American Watchmakers Institute, and his expertise on the topic is unparalleled. We will also discuss the necessary components that go into creating the perfect gear wheel, such as index fixtures and the use of Swiss-made cutters.

The Importance of Cutting Clock Wheels for AWI Certification

The American Watchmakers Institute grants certification to clockmakers who have demonstrated an exceptional understanding of the craft. Part of the certification process involves the creation of a wheel for testing. The AWI specifies the type of wheel to be created, including the module, material, number of teeth, and specifications for the diameter.

Using an Index Fixture and Index Plate

Creating a wheel for AWI certification involves the use of an index fixture and an index plate. These tools are used to produce the perfect wheel for testing. The index fixture is a device that secures the raw material to be cut, and the index plate determines how many teeth will be cut into the wheel.

Specifications for the Wheel

The specific wheel required for AWI certification is 60 40 0.5 Module. The AWI supplies the raw material for the wheel, and it must adhere to strict specifications. The OD of the wheel is crucial in the construction of the gear, as the depth of the tooth is judged by the diameter of the gear blank.

Understanding Tooth Addendum

The periphery of the gear blank must be of an exact diameter to ensure the tooth’s proper depth. The specifications for the wheel include 64 teeth and 0.5 modules. The pitch diameter is the diameter of the wheel at the point of contact with its mating wheel, and it is equal to 0.5 module times 64 teeth.

The total diameter of the wheel is equal to 0.5 module times 64 teeth plus 2a, where a is the tooth addendum. The tooth addendum is not necessarily the module and ranges from about 1 module to 1.2 modules in clock gearing. Understanding the tooth addendum is essential in creating a functional clock.

The Use of Swiss-Made Cutters

The use of Swiss-made cutters works well with an addendum of 1 module. This type of cutter is precise and produces an exquisite finish on the tooth surface. It is essential to use the correct cutter in creating the wheel, as it can significantly affect the finished product’s quality.


Cutting clock wheels is undoubtedly a complex and intricate task that requires a great deal of attention to detail and skill. It is an integral part of the clockmaking process and one that requires precision and accuracy. We hope this blog post has provided useful insights into creating the perfect gear wheel for AWI certification.


  1. What is the American Watchmakers Institute?
    The American Watchmakers Institute is a non-profit organization that grants certification to clockmakers who demonstrate exceptional understanding and skills in the craft.

  2. What is an index fixture?
    An index fixture is a device that secures the raw material to be cut into a gear wheel.

  3. What is an addendum?
    Addendum refers to the distance from the pitch circle to the top of the tooth.

  4. What is a cutter?
    A cutter is a tool used to cut or shape material into a specific form or shape, in this case, a gear wheel.

  5. Why is cutting clock wheels important?
    Cutting clock wheels is important because it is an integral part of the clockmaking process, and the quality of the finished product depends on the precision and accuracy of the wheel. The AWI certification also requires the creation of a wheel for testing, making it necessary for clockmakers to understand the process.

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