GoPro Mount Base import this into your GoPro Mount design
Free     Printables     oliverlopez

GoPro Mount Base (import this into your GoPro Mount design)

GoPro mount base with !exact measurements to be implemented into your design Tested with official GoPro Hero 4 case models ...

similar models —

GoPro Mount Base (import this into your GoPro Mount design) alternatives
Digital Shoe Design Kit
DaveMakesStuff