Hi Guys. I'm trying to decide between buying the older school k&d (model might be 123A, but not sure) winder and the modern 3D printed winder found on ebay. I mainly work on pocket watches and have a multi-barrel watch craft set for those. I don't plan to do many wristwatches but i do have a few 1940s small military style watches that I'm starting to work on. The barrel for the current project is 9.3 mm, too small for the watch craft winder. The K&D is about three times the cost but