I modeled and printed some GoPro Hero3 Mass Models for use with my Tarot T-2D gimbal. I decided it was dumb to constantly risk my Hero3 when I didn't need to so I created these. One is a straight form/fit/weight model of a Hero3. One is to carry my Keychain Camera. One is to carry a board camera I bought on EBay for FPV. The Google Sketchup Model and the .stl files for printing these are available at the following site -
These are printed with of PLA plastic which isn't heavy enough to equal the weight of a Hero3 so I have to add a metal mass to them to get the weight up to the 76g that a Hero3 weighs. So far I have only modeled a Hero3 - I will do a Hero2 and Hero3+ soon.
if you have questions just email me at MKTable@toast2.net