We will start by exploring the use of tools and equipment, including care and maintenance. You will learn the types and appropriate use of the jeweler’s saw, tweezers, screwdrivers, files, and the watchmaker’s lathe. You will learn the fundamentals of hardening, tempering, and annealing steel; measuring techniques and applying the metric system in the use of instruments and gauges. We will also look at how to make technical drawings and to manufacture tools and parts using drawings.
We will review the math necessary to understand how to calculate formulas used in manufacturing and watch repair. Formulas are introduced to find the length of mainsprings, calculate running time, and beats per hour. You will learn to apply various polishing materials and techniques to master the manufacture of small parts.
WINDING & SETTING MECHANISMS
You will learn to correct common errors in the mainspring barrel, the barrel bridge, and main plate. Introduction to common types of setting mechanisms and practice of correct disassembly, assessment, adjustment, re-assembly, and lubrication procedures. We will cover the mathematical formulas for determining correct size of mainsprings.
WATCH GEAR TRAIN
We will cover the mathematics involved in working with the gear train and tooth form, module, pitch, and distance between centers including calculations to determine running time, and vibrations per hour for mechanical watches and ratios. You will learn to dismantle, assemble, maintain, and repair the gear train of a watch.
We will cover the role of the escapement in the watch. History and development of different escapements and their influence on timekeeping will be explored. Adjustment of the escapement will also be covered.
INTRODUCTION TO PRECISION TIMING
We will cover the concepts of precision timing with emphasis on the eight influences on isochronism (friction, external influences, regulating pins, escapement, magnetism, temperature, poising of balance wheel, posing of hairspring). We will look at the theoretical concepts of precision timing and apply this to practice watches: analyzing errors and making corrections to improve the timekeeping of the watches.
We will begin to apply the information and knowledge gained and will practice cutting, filing, and milling to create parts. We can also explore decorative work, such as engine turning.
Sourcing of replacement parts, case cleaning, solvents, crystal replacement, archival storage, & display.
Watch project – 6497. Decoration and fabrication of parts, such as dial, hands, click, etc.