I had designed this to prevent grass, dirt, etc. from getting inside of the motors when landing. Once I put them on, I noticed a significant improvement. Also, they did not affect the flight characteristics or performance. You can print the front and back motor protectors different colors for better visibility. Best of all, they hold up suprisingly well!
To install the motor protectors, first remove the four screws underneath the motor. Then slide in the motor protector and install the screws.
I have been 3D printing since March 2017 and I am 16 years old. I am interested in creating useful prints and home decor. I am also interested in computer programming. I am still a beginner/intermediate at CAD and a high school student, so I create designs during my leisure time. I got into 3D printing when my school started discussing and showing us their printers. At school we got some elite printers: The Prusa i3 mk2 and the Lulzbot Taz 5. I also got motivated by YouTube videos as well.