I'm starting to toy with a new project. I've recently found designs for a medieval Astrolabe, which I fancy chancing my hand at making. http://www.joh.cam.ac.uk/way-stars-build-your-own-astrolabe Not exactly a clock or a Watch, but a fun project to tell the time with. The original design is intended to be printed onto card with an acrylic sheet for the Rete but where's the fun in that ? So I'm going to use it as the base for a genuine Chaucerian model - brass sheets of the right thinckness is a bit pricey for a whim, so I'm thinking of prototyping on aluminium which i can always plate later to look like brass anyway . Are there others interested in Ancient and Medieval horology prior to the clock?