Landing skid that matches the iFlight XL series frames (and maybe more?).
I don't like relying on the 3D print to hold up to the torque of a motor screw. Firstly, the torque is relatively high for 3D printed fabrics and weakens it and secondly, if the print does break or crack, you might not know and have vibration issues.
For this reason, I have 2 of the mounting holes completely open so that 2 screws are fastening the motor directly to the frame. the other 2 hold the part on and doesn't require as much torque.
When printing, make sure you mirror the print for 2 of the 4 parts.