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 […]


Brass Staking Block

Just before beginning work on the winding stems we had another project that presented us with the opportunity to use the Schaublin lathes again. Our task this time was to make a brass staking block. This would become an important tool, enabling us to measure the length and diameters of our winding stems, and subsequent […]


Winding Stem for an ETA 6497

We were now given the chance to start making complete winding stems from start to finish in preparation for our first micro mechanics exam. For the exam would we would be given 8 hours to make a winding stem from scratch to match the technical drawing provided by WOSTEP in Switzerland. We had a choice […]


Winding Stem Blank using a Horia Lathe and Motor

So now we were finally able to make a winding stem, well a winding stem of sorts, using the Horia lathe and motor. It wasn’t a complete stem as it lacked a square, slot, thread and a burnished pivot. It was also rather large in size relative to a functioning winding stem. For this exercise […]


Filing Squares

The last exercise to complete before we started making the first winding stems was to perfect the art of filing squares. We had to make a set of 5 squares with the last of the set being just 0.60mm in diameter with a tolerance of +/-0.03mm. This would be the start of very small tolerances […]


Steeltech Quartz Repair for my Brother

My brother had this watch lying around in a drawer as it had stop working and a new battery hadn’t fixed it. I asked if I could take a look with a view to getting it working again. I popped the back off and disassembled everything… I discovered a cheap Seiko Hattori quartz movement that […]


Tag Heuer 2000 Automatic Project

I purchased this watch from eBay as a water damaged model that was deemed beyond repair. I disassembled the watch on receiving it and discovered extensive damage that explained the ‘deemed beyond repair’. I decided to leave any work until I started at the school when I would source some parts for it. Before… With […]

Lathe Exercises

We had now completed the first part of the course so out came the Horia lathes that we would be using for both of our micro mechanics exams, albeit with a motor instead of a hand wheel. Both exams would be in February so we had a lengthy amount of time to prepare but the […]