whistles

stand.scad

 1include <BOSL2/std.scad>
 2
 3$fa = 1;
 4$fs = $preview ? 2 : 0.5;
 5$slop = 0.1;
 6
 7// Which part to make: you need both.
 8part = 0; // [0, 1]
 9
10// Inside diameter of your instrument
11id = 20; // [10:50]
12
13thickness=id/5;
14
15difference() {
16  union() {
17    up(10) conv_hull() cuboid([id, thickness, 90], rounding=1, anchor=BOTTOM) {
18      attach(TOP) up(id/2) ycyl(h=thickness, d=id/2, rounding=1, anchor=BOTTOM);
19    }
20    up(25) difference() {
21      yrot(45) cuboid([50, thickness, 50], rounding=1);
22      cuboid(100, anchor=TOP);
23      up(15) cuboid(100, anchor=BOTTOM);
24    }
25    intersection() {
26      up(30) xrot(90) tube(h=thickness, ir=400, wall=20, rounding=1, anchor=BACK);
27      cuboid(275, anchor=BOTTOM);
28    }
29  }
30  up(part?30:29) xrot(part?180:0) {
31    cuboid([thickness+($slop*2), thickness+($slop*2), 100], anchor=BOTTOM);
32  }
33}
34