GCCV (Google Cardboard Compatible Viewer)

thingiverse

This viewer is designed to be compatible with Google Cardboard and can support phones up to 4.8 inches in size, making it a perfect fit for a Samsung S3 even with a case, and should still work with a 5.0 inch phone. It's built with multiple parts that can be easily modified, relying on M3 bolts to keep everything securely in place. For added comfort when using a strap, I recommend adding some padding. This current version features 38mm lenses taken from my old Oculus Rift DK1, but as soon as the official Cardboard sized lenses arrive, I'll make a new version for use with them. Now includes an improved visor that uses almost double the amount of plastic as before. This change allows for easy padding addition and has a top strap holder to keep everything secure.