$fn = 60;
/* measured with calipers */
-ball_diameter = 12.7 + 0.80; // extra bit added for printing imprecision
+ball_diameter = 11 + 1.0; // extra bit added for printing imprecision
ball_radius = ball_diameter / 2;
standoff_height = 60; // kyle eyeballed
-gap = 2;
+gap = 3;
wall_thickness = 1;
holder_floor = 3;
holder_arms_length = 20;