About this 3D model
derived from this... http://www.thingiverse.com/thing:13850 which was derived from http://www.thingiverse.com/thing:9915 existing parametric variables servo width - servo_width added and/or fixed parametric variables for; servo length - servo_length base width - base_width : the width of the base plate of the bracket base length - base_length : the length of the base plate of the bracket base thickness - base_thickness : the thickness of the base plate of the bracket hole distance - hole_distance : distance between servo mounting hole hole diameter - hole_diameter : servo mounting holes sizes improved the math for positioning the mounting holes; made the holes a fixed distance from outside edge of the base plate rather than the center. made the servo_width variable an argument to the 'arm' module