How to repair a wind-up watch.
The first step is to establish a clean and well-lit work area with a bench. You have then to assemble tools. A magnifying device, sharp non-magnetic tweezers, screwdrivers sized for watch repair, pliers of various sizes, nippers, files, a demagnetizer, cleaning solvents and oils, are essential.Add an emery cloth, a knife, hands-remover, adhesives and measuring tools. A lathe, an ultrasonic cleaning machine, a truing caliper, a jewel tool, polisher, grinder and a timing machine, will enable you to carry out more complicated repairs, but need significant investment.
It may be necessary to replace the crystal. It may be made of glass, plastic or synthetic sapphire. They be round or have another fancy shape. It is worth searching for a crystal from the original manufacturer. Glass crystals with plastic tension rings are commonly available. The replacement crystal may be a bit large and will need filing and polishing on the sides to make for a perfect fit.
More complex repairs need skills that come with years of training by working with masters. It would be best to take a course before attempting more than a cleaning and crystal-replacement project. There are associations and many publications from which one can choose to acquire the advanced skills needed for exhaustive and multi-step watch repairs. Try and refer a watch that continues to malfunction after routine cleaning, to a person who has sufficient experience and confidence as well as a track record to match.
It is time to reassemble your wind-up watch. Do make it a point to wear it on occasion, wind it everyday and teach someone in your family to look after it as well. Since you have a workbench and some precision tools, you could consider setting up a service for friends and other enthusiasts, to give vent to a hobby that some pursue with passion.
