As you know your tinyboy printer is made of plates which are directly touching the ground. Then during long Prints, the steppers are getting very hot and they warm everthing arround them during all the print. This is not good for the printer in a long term. This foot that you should print in 4 copy and place a each corner of your printer allows you to enhance it, and then let fresh air circulaite arround the steppers and the electronics. The notch gets thinner at the bottom then the foot stays blocked on the plates. Very convenient if you raise the printer and don't wan't them to fall down.You can make 4 in one print on your TinyBoy as shown on picture.