Raspberry pi 3 model A GPIO protection

After i've bricked 2 raspberry pi 3 model A (in my opinion best value for money raspy version) short-circuiting GPIO pins accidentally (with my hands or with the metal caliper), i've decided to design and print a little protection for the GPIO pins.
It also protects pins on the lower part od the board.
I suggest to print on the printer bed with the orientation as shown in the picture.