Servo horn 3" Wheel

This is a wheel I designed for a Tower Pro MG995 round servo horn or a 21mm diameter servo horn. The wheel is 3" in diameter and .5" wide. For added traction, two rubber bands can be put on the edge of the wheel. The wheel features easy access to the servo horn mounting screw for easy removal of the wheel and horn at the same time. I designed the part in inches so if you have 3D printer software that uses mm you must scale the object by 25.4 to get it to actual size, or 2.54 if it uses cm. This is calculated by the conversion from inches to millimeters. NOTE: I printed this in PLA, if you print in ABS the part will shrink some, making it hard to fit the servo horn. If you print in ABS you might need to scale the object slightly larger than 25.4.