This may sound like a very dumb question, but I am building my first quadcopter and I just realized that some frames have these perfectly symmetrical holes/spaces.
I used up all the screws on mine, so I don't think I have to actually use those spaces, but why are they there?
Is it to allow the user to make more modifications? Are some of the spaces/holes deliberately made to fit certain screws for modifications?
This is the drone frame that I am specifically referring to, but this applies to a lot of other frames (and even electronics in general) as well.