About this 3D model
Flip32+or Naze32 (I haven't tried this on Naze32) - 35mm http://witespyquad.gostorego.com/the-flip32-249.html Power Distruction Board - 36mm http://witespyquad.gostorego.com/mini-power-distribution-board.html Mounting hold distance of PDB and FC are 30mm on all corners.