guitar

nut.scad

 1// Size of the nut
 2size = [30, 9, 5];
 3
 4// Strings you're putting on it, in mils (aka thous)
 5string_gauges = [11, 16, 30, 40];
 6
 7difference() {
 8  $fn = 180; // 180 faces per complete circle is good enough for printing
 9  inch = 25.4; // mm per inch
10  mil = inch / 1000; // mm per mil
11
12  intersection() {
13    cube(size);
14    rotate([0, 90, 0]) cylinder(h=size.x, r=size.y);
15  }
16
17  strings = string_gauges * mil;
18  spacing = size.x / len(strings);
19  for (n = [0:len(strings)-1]) {
20    d = strings[n];
21    pos = [spacing * (n + 1/2), size.y, 0];
22    translate(pos) rotate([5, 0, 0]) hull() {
23      translate([0, 0, 0]) cylinder(h=size.z*2, d=d, center=true);
24      translate([0, 10, 0]) cylinder(h=size.z*2, d=d, center=true);
25    }
26  }
27}