use <publicDomainGearLib.scad>;
n1 = 6; 
n2 = 24;

mm_per_tooth = 4; //all meshing gears need the same mm_per_tooth (and the same pressure_angle)
thickness    = 2;
hole         = 4;
height       = 12;

// Rack with dimensions sized to fit switch setup
translate([0,-20,0]) rack(mm_per_tooth,n2,3,6);

// Create gear with square axle for coupling to spring
gear(mm_per_tooth,n2,thickness,hole);

$fn=30;
h=4;
translate([0,0,thickness/2]) difference(){
  translate([-2.5,-2.5,0]) cube([5,5,h]);
  cylinder(fn=30,r=2,h=10);
}