This arm was made for F450 DJI 2212 960KV motors.
The holes are aligned for that specifik motor. I have uploaded the DWG file for you to edit the holes size and position for your need. I have printed i PLA plastic with 100% infill for durability.
I have also strengthen the landing leg with some extra sidways support.
Arm.dwg | 3.9MB | |
F450_Arm_with_holes_for_DJI_2212_KV960.stl | 1.9MB |