From Valve Developer Community
- This could be useful when Creating custom gibs, to ensure that each gib has a sensible ModelOrigin (center) for lighting, collision, etc. but spawns in the correct position relative to its parent breakable model. Simply model the gibs as a cluster - in their spawn positions, then export each gib separately and add
$autocenterto each gib's QC file. Unfortunatelly, $autocenter only works on prop_static.