Delicate Glass Orientation Mechanism

I need a mechanical concept that reliably flips small, curved or uneven glass pieces—anywhere from 1 mm to 15 mm thick—so one predefined side always exits facing up. The only powered motion available is the vibration that drives the parts forward; the actual turning must happen passively, triggered by each object’s own notch, edge, or symmetric shape. Your task is to map out a gentle, scratch-free path that exploits geometry, gravity, ramps, rails, or similar purely mechanical features in a compact size. Please supply: • An explanation of the principle that forces the part to rotate while it travels, without using additional actuators or sensors. • Sketches or CAD layouts of the feed path, highlighting any soft contact surfaces and clearances needed to protect delicate glass. • Notes on materials, tolerances, and vibration parameters (vibration is for conveying only, not for turning). • Suggestions for scaling or adapting the same approach to future shapes or size ranges. Acceptance criteria: at least 98 % of parts leave with the correct face up at 60 parts/min and show no visible damage. Experience with vibratory feeders, precision handling of fragile materials, or similar orienting devices will be valuable context to share alongside your concept.