This is a slick and low-profile case for clip-on sunglasses.

It's only 9mm thick!

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The dimensions of the space for the sunglasses:

The Solidworks file and step file are available for remixes.

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Print Setting:

• Layer height: 0.2mm
• Infill: 10-20%
• Premeter: 2-3 (for 0.6mm nozzle, two premeters are enough)

After Print:

1. Add x12 3*0.85mm magnets to each hole on the top and bottom part. Make sure that the magnets in the top and bottom parts don't repel each other. 
2. Add x2 3*0.85mm magnets to the glasses magnet place. Make sure that the magnet doesn't repel the glasses.
3. Add two pieces of 1.75 filament to the hinge holes.
4. You can add two pieces of soft fabric to the case to prevent scratching the sunglasses. A guide template can be printed to cut the fabric.