I have just begun the last quarter of the first year of watch school here at NSCC. Focus has been working mainly on ETA 255.112 quartz movements. The biggest challenge there is to learn the precise amounts of the different oils to apply to lubricate the mechanism while not allowing the oil to spread to other parts of the watch.
I did get a chance to work on a customers watch however, this was an old pin-pallet alarm watch. The alarm, winding and hand setting were all not working.
To fix the hand setting, which was extremely rough due to wear in the keyless works I needed to bush the first intermediate setting wheel's post. I decided to go with a steel bushing to prevent future wear on the soft brass underneath. I took a picture of a few of the steps below.
 |
| After drilling the center hole |
 |
| Hardening the steel tube |
 |
| The drilling phase |
 |
| Turning the outside diameter with a carbide cutter |
 |
| The badly worn original post |
