This design is an stl file of a motor mount destined to be 3d printed in ABS or PLA to assemble your own drone or gimbal, the stl format allows you to immediately send the design to your favorite 3d slicer program and then to your 3d printer. The motor mount can accommodate motor with mounting holes ranging from 16mm to 19mm (which corresponds with most 28 size brushless motors and most brushless gimbal motors) and also motors with mounting holes ranging from 19mm to 25mm (which corresponds to most 35 size brushless motors) These motor mounts are made to be fixed on a aluminium or carbon fiber tube 16mm in diameter. The advantage of this design is that you can put the motor cables through the tube which makes it more clean looking. There are several different designs from which you can choose according to your needs ( coaxial motor mounts for 28size or 35size brushless motors for instance ), There are 4 different types of motor mounts: 2 with 16mm x 19mm mounting holes and 2 with 19mm x 25mm mounting holes.
The motor mount should be secured with 30mm M3 screws, washers on either side and a M3 lock nut. It is highly recommended to use 2 O-rings (size 10 (12.1mm x 17.5mm) or size 11(13.6mm x 19mm)) to better secure the motor mount to the 16mm tube.
The recommended infill to print this object is between 60% and 80%.
NOTE THAT THE MOTORS; PROPELLERS; BOLTS; SCREWS; AND ALL OTHER OBJECTS IN THE SCREENSHOTS THAT ARE NOT DESTINED TO BE 3D PRINTED ARE NOT INCLUDED IN THE DESIGN FILES.
If you need a particular size of motor mount please check my account or let me know in the comments.