This plate fits on a 3DR quad-C quadcopter. It is intended to hold the APM securely while reducing vibration.
The assembly uses anti vibration mounts from McMaster Carr: http://www.mcmaster.com/#9311K64, some #6 hardware, and thread locker.
3D Model Data :
APM_tray.STL (104 KB) Priview Editor
APM_Plate.STL (621 KB) Priview Editor