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ETA 6498 Keyless work- Lubrication and fault finding

Now we were a bit more familiar with the 6498 we could start to learn how to service everything correctly. The movement minus the balance would be broken down into different areas. We would focus on one area at a time, learning how to find faults and how to correctly lubricate all the components. We […]

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School Watch- Balance Staff for ETA 6498

With both the winding stem and pivot gauge examinations out of the way, which I’m pleased to say that I comfortably passed both, we could move on to making balance staffs. A balance staff is riveted to the balance wheel and becomes its arbor. The balance staff also holds the jewelled roller and the hairspring […]

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6498 School Watch Bridges- Marking, Cutting and Filing

We received some of the first parts for our School Watch a few months back, this included the ETA 6498 blank that is removed from the start of production at ETA specifically for the schools. We receive a blank that has all the bridges marked out and the jewel holes, etc pre-drilled. The next step […]

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Initial Ideas for My School Watch- ETA 6498 Base Calibre

Long before the days of practicing for and completing examinations, I was already thinking about what I might do with the school watch we get to make. We will be using the ETA Unitas 6498 as the base, we receive the movement in kit form and each component has to be either made, finished or […]

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Pivot Gauges with Straight and Conical Pivots

The second of our two micro mechanics exams was to produce a pivot gauge. We once again had a time limit of 8 hours to complete it, turned between centres using a hand lathe. The task would be a lot harder than the winding stems because this time we would be using blued steel, which […]

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Winding Stem Exam Practices

Over the course of the next month or so, we continued to practice making winding stems, to make sure we were competent at each of the processes required to produce a stem. With both micro mechanics exams only 4 weeks apart, we also began preparing for the second exam in which we were required to […]