I liked the original design because of its clean surfaces and edges. I've just tweaked it a little bit and added the base for the ApexEVO frame.
!IMPORTANT!{begin}
The gap between the front propellers and the mount is about 6mm. I haven't experienced any issues yet, but I think it might be possible for the propellers to bend and touch the mount under heavy load (e.g. recovering out of a dive). The angle should prevent the propellers from cutting into the TPU but I've also made a version with a 5 mm higher base.
!IMPORTANT!{end} 😉
The author remixed this model.