GoPro Session5 ballast designed to be the exact weight as your camera and indestructible so you can practice with the same weight on your drone without risking breaking the camera! This model is designed to take a stack of nickels into its core to help save some filament, then simply hot glue them into place. The original Session5 weighs about 72g and is designed for 6 nickels in the core, so you want about 35g of material to go into the print. This was a sparse infill density of 55 with my other settings. Play around a bit and get close to 35g then print away!