Modification of the central frame to accommodate SpeedyBee F745 AIO flight controller or similar 25.5x25.5 flight controller.
The flight controller screw holes are 2mm.
Print:
pla-cf : 3 wall 20% infill THE BEST
pla: 4 wall 25% infill
petg-cf: 4 wall 35% infill
Original frame:
https://makerworld.com/en/models/236234#profileId-269466