Finally pulled CD’s chronograph apart today. Simple enough process.
Case back removed-
Chronographs are a bit different than a standard dive watch, as the pushers that start, stop, & reset the chronograph function are fastened to the case, and must be removed before the movement will clear. In this case, the pushers were held in place with tiny circlips, external diameter about 2mm. You can see one the 1:00 position on the side of the blue tray- that tiny gray spec. They came off easily enough. Unfortunately, even though I made sure they were both in the tray, one somehow took off under it’s own power, so I’ll have to source a new one before both pushers can be reinstalled. That will be nearly the last step, so it will not hold up the dial construction or the rest of the project at at all.
Here, hands and dial have been removed from the movement. The dial diameter is about 31 mm, a larger by 2.5mm than the dive watches. In addition to the tiny circlip, a 9mm punch is on the shopping list as well. It appears that the m/h hands are compatible with the dive watch hands, while the second/timer hand is much larger. This means that I can fit some more exciting m/h hands than stock. Next up on the agenda for this project is creating a template for the dial in Illustrator, and creating a digital rendering using various hands, bands, and dial designs to get a feel for what will work best visually.
Unrelated- fixed the Runway dial indices with Rodico putty, a steady hand, and super glue. Going to pick up another one of these dials to keep on hand for the next time Mom destroys it.