Portal 2 personality core
Silly little keychain I made after playing the games and some mods ^^
All of mine were printed at about 105% - 110% to make sure the battery fits, so I think that should apply to most printers. Put a support blocker right in the middle of the model, where the LED should go for easiest printing, and make the model face upward
Painted with acrylic paint, and the optic was made with clear tape and nail polish
Should fit a coin battery and LED light
(2nd and 3rd image have the different versions in order from left to right. Version 1, Version 2 [annoyed flavor], and Version 3)
PLEASE POST A MAKE IF YOU MAKE ONE!!!