Raspberry Pi 3 Really Light Version Keyring

I found a complete version of the Raspberry Pi 3 on GrabCAD here https://grabcad.com/library/raspberry-pi-3-model-b-4 and wanted to print it smaller and easily. It's designed to be printed at about 60% to 75% and makes a lovely keyring/prize. I simplified a lot of parts to make it easy to print and strong and enlarged the bolts holes so a keyring ring can easily be fitted into them when it's shrunk.