Clip-on Sunglasses Case

thingiverse

#### https://gitlab.com/warrcad/sunglasses-case This is an optimized custom carrying/protective case for Solar Shield clip-on sunglasses (purchased at Walmart). I like them because they're much thinner and lighter than other clip-on designs I've used, so they don't weigh down your glasses. Unfortunately, the only way to disable the dimming effect (e.g. when you step into a dimly-lit room from outside) is to remove them completely. They're very delicate (I've broken 2 just by dropping them) so they need a protective case when not in use. The problems with the original case the sunglasses came in: - Made of soft material, which does not protect well. - Covered in stickers which are hard to remove, leave residue, and disintegrate when the case is washed. - Case contacts sunglasses lenses when used, transferring grease and dirt, so both need to be washed. The problems with other, general-purpose sunglasses cases: - Often too large, not fitting well in pockets, and leaving clip-on sunglasses to rattle around inside. - Often made of metal, can be heavy, shape can deform or creep over time making lid misalign. - Case contacts sunglasses lenses when used, transferring grease and dirt, so both need to be washed. My glasses are about 120mm wide by 35mm tall. The internal flanges on the lid of this case are 125mm wide, so the clip-on sunglasses will clip onto it with a little tension to hold them in place. When the lid is shut, the lenses do not contact the case. For different sized clip-ons, the model can be altered or simply scaled when printing. Scaling results would be best when all axes are scaled equally, so the hinge geometry isn't distorted. This model can be 3D-printed with 45-degree overhangs and no support. Print each piece separately, rotated so the outer flat surface is on the print bed (orientation should be pretty obvious for experienced users). You can use a decorative bottom infill pattern. The two parts snap together with a little flexing. The hinge is initially tight; work it back and forth and/or add a little lubricant to smooth it out.