Hi Guys, this isn't actually a Rolex, it's an old English chain fusee pocket watch, but the principle for all watches is the same. I thought I would share the process of making a balance staff for a watch for which parts are no longer available as that is a hotly debated topic for vintage Rolex right now.
Hope you enjoy.
I recently had a very old English chain fusee pocket watch come in. The watch needed a new balance staff because of a broken pivot. Due to parts not being available, I had to make one with my lathe.
Here is the lathe that I use. It is an 8mm G. Boley watchmakers lathe with a variable speed motor.
1.jpeg
Before we can start on the new staff, the old balance staff must be measured so we know what size to make the new staff. I measure and draw a rough sketch.
2.jpeg
Next, I use 2mm blue steel and mount it in a lathe collet. This is how our balance staff will begin its life.
3.jpeg
I start to turn the steel down to size in the different sections.
4.jpeg
More turning on the lathe.
5.jpeg
We can see that the staff is starting to take shape.
6.jpeg
Now we are really getting somewhere. The first pivot has been turned and the undercut has been turned so that it can be riveted onto the balance.
7.jpeg
Once the one ended has been completed, the other end must be turned. We need to turn the staff in one sitting otherwise the workpiece won’t be true.
8.jpeg
More shots of the balance staff.
9.jpeg
More shots of it starting to take shape.
10.jpeg
A few more.
11.jpeg
I now start to turn the bottom pivot.
12.jpeg
It’s crucial to go very slow and carefully at this point.
13.jpeg
The pivot is almost there. A few more turns and it will be ready to part off.
14.jpeg
Once parted off, the pivots are cut to size to make sure it fits between the plates. I will then mount it on the balance and polish the pivots.
15.jpeg
Here is the staff next to a Canadian 10 cent coin for scale.
16.jpeg