Modern Trench Watch

thingiverse

This Trench-style timepiece features a sturdy Hamilton movement dating back to 1921, carefully adapted for integration into my own 3D printing operation. The Trench watch itself was designed for military use during World War I when conventional pocket watches proved impractical in combat settings. As an evolutionary step between the traditional pocket watch and the wristwatch, this hybrid model incorporates desirable features from both designs. The materials required to construct two of these Trench-style timepieces are listed below: Two 40mm watch glass lenses sourced from eBay for front and rear usage One 17-jewel pocket watch movement available on eBay at a cost of $45. I found it to be functional when purchased. PLA filament with a 20% infill setting is recommended. Print two identical shells, employing the same .2mm layer height standard. To build one Trench-style timepiece: - Produce one complete watch case - Generate one ring for display at the front of the watch face - Print spacers to accommodate placement with the glass. Create multiple instances if no crystal is used. - Assemble two link ends measuring 22 millimeters in length. Duplicate as needed to build additional watches. - Produce one clasp component - Yield ten link elements (also measuring 22 millimeters) and duplicate to suit production demand. To interconnect these link components, position them so they meet at a 90-degree angle. Upon close inspection, notice how the small rectangular "peg" found on the male end perfectly fits within the notched recess located within the opposing female component