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WATCH 150: Service on the Watch Case: Crystals, Crowns, Tubes and Water Resistance

March 9 @ 8:00 am - March 13 @ 5:00 pm UTC-5


The purpose of this new course is to teach the much overlooked skills involved with casing. Many skills are needed when dealing with the wide variety of complex case designs. We will explore crystals, case buttons, crowns and case tubes. These components will be serviced (ie taken apart, gaskets replaced, lok-tite applied, etc). Complete disassembly of the cases will be done using the case press and a multitude of various dies. You will learn the proper ways to utilize the case press while minimizing the risk of damaging components.  In addition, waterproof testing (both dry and wet methods) will be taught and applied to all of the watch cases you work on. This class also allows for the proper casing and uncasing of a few different types of quartz and mechanical movements as well.

This would be great course for:

  1. A new or existing polisher
  2. New or existing Watch Technician
  3. Watchmaker who hasn’t had this type of training
  4. Watchmaker whom needs updating of these skills
  5. Watchmaker / Technician who wants to learn water testing on a multitude of different machines.


 Prerequisites:  none


Course objectives

The student will learn about:

  • Gluing in crystals
  • Removing fixed and rotating bezels
  • The case press usage and its variables
  • Measuring and selecting the proper gaskets
  • The Systematic approach of disassembly and assembly
  • Fitting a case tube plus Loctite
  • Application of Fomblin to gaskets and caseback threads
  • Dealing with accessories such as case back screws, helium valves and more
  • Water testing the case (utilizing both the wet and dry methods


This is a full hands-on course

  • This course deals with a variety of case designs


Cost: $1095 for AWCI members $1245 for non-members

Class Schedule: 5 days, Monday – Thursday 8:00 a.m. – 5:00 p.m. Friday 8 a.m. – 3 p.m.

Feel free to contact our education director Jason Champion with any questions at education@awci.com or at 866-367-2924 extension 303.


 Essential materials for the student to bring


Hand-tools should be provided by the student. Ownership of quality hand tools is an expectation of a Professional Watchmaker. The brand name Bergeon mentioned below is used to help you identify the tools from the most popular tool catalogs; you are welcome to choose a brand of your choice, as long as, it is of equal or better quality.  


Check with your supplier for the recommended hand tools or their equivalents.



                                 Watch Encasing Case

        TOOL LIST




1. Buff stick leather 6.0 mm wide with plexi-cover # 4056-6

1282-D      4056-6

2. Casing cushion


3. Cloth (lint-free) Selvyt or Micro-fiber 


4. Dust-blower (rubber)


5. Knife to sharpen pegwood


6. Loupe 4X or 5X 


7. Loupe 10X or higher for inspection


8. Oilers (plastic handle, spade tipped)  small sizes   Bergeon only   

7013 or 30102

9. Plexi-stick  (clear style preferred)


10. Rodico or Rub-off

Rodico # 7033

11. Screwdrivers, with stand (Bergeon, Horotec, Vaucher, etc.) 


12. Tweezers, brass, bronze or nickel 




March 9 @ 8:00 am UTC-5
March 13 @ 5:00 pm UTC-5
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AWCI – Harrison, Ohio
701 Enterprise Dr
Harrison, OH 45030 United States
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American Watchmakers – Clockmakers Institute