you can use the stl provided or you can use the autosave .skp file to start from the back of the camera and design your own mount. this part uses the same mounting screw and plastic bolt and washer from the stock mount. I recommend you print slow as the walls are varying thicknesses but are all very thin. the tolerances are very tight. i used a set of sae hex wrenches to slowly wallow out the tolerance till i got a good snug fit. Enjoy! made on my printrbot using about 25% infill and at about 20mmps