The high hardness and brittleness of sapphire glass make it extremely difficult to process, and traditional grinding ...

The project uses CNC routing, Solidworks for CAD, laser engraving, and woodworking to design the custom case for a set of calipers, metric and English screw pitch gauges, fillet gauges ...

The CNC's design is distinctly workshop-like ... and the fact that it's built so solidly only boosts the laser engraving ...