I thought they might be interesting, engineering in miniature.
 |
| A German Boley Lathe driving an Antique "Pivot" drilling tool.The match is just to show the scale |
 |
| Close up. we're going to drill a tiny hole down the end of the pinion, this will allow us to insert a new pivot. this is one of the more difficult repairs in clock and watch making. |
 |
| This is a "Solid Tungsten Drill" very small, the part I'm holding is 3mm wide. |
 |
| Another view, drilling a balance wheel for a new pivot. This little tool is over a hundred years old, it was normally driven by a "bow". I now drive it from my lathe. The little "o" ring rubber belt will slip if you apply too much pressure, which is just perfect. |
 |
| This tool is know as a "jacot tool". We use it to "size" and "Polish" pivots. It's being used here on a carriage clock pivot. This tool is driven by some thread and a rubber band, again a bow would have originally been used . |
 |
| This is a "fusee" wheel from a 19th century pocket watch. The chain is just like a miniature bike chain. The cone shape was used to compensate for uneven main spring pressure. |
 |
| "Fusee" and Spring Barrel with chain |
 |
| Repairing a Fusee Chain is really difficult, so small. You need To make special tools. |
 |
| We need to make a rivet to join these together. |
 |
| Riveting the chain |
