ep = 0.01;
$fn = 128;

difference() {
  union() {
    difference() {
      // main cylinder stack
      color("SkyBlue") union() {
        translate([0, 0, 6.5]) cylinder(d = 27, h = 13, center = true);
        translate([0, 0, 1]) cylinder(d = 29, h = 2, center = true);
      }

      color("LavenderBlush") union() {
        // cut away the interior
        translate([0, 0, 5]) cylinder(d = 25, h = 10.01, center = true);

        // square off the sides
        translate([-10, 13.5, -1]) cube([20, 10, 15]);
        translate([-10, -23.5, -1]) cube([20, 10, 15]);
      }
    }

    // add internal indexing ridges
    color("LightSteelBlue") union() {
      translate([-1.5, 12, 0]) cube([3, 1.25, 6]);
      translate([-1.5, -13.25, 0]) cube([3, 1.25, 6]);
    }
  }

  color("DarkSeaGreen") union() {
    // punch out the side holes
    translate([0, 0, 3.1]) rotate([90, 0, 0]) cylinder(d = 2.2, h = 30, center=true);
    translate([0, 0, 4.3]) rotate([90, 0, 0]) cylinder(d = 2.2, h = 30, center=true);
    translate([-1.1, -15, 3]) cube([2.2, 30, 1.5]);

    // chamfer the top
    difference() {
      translate([0, 0, 10]) cylinder(d2 = 26, d1 = 34, h = 6);
      translate([0, 0, 9.99]) cylinder(d2 = 16, d1 = 28, h = 6.02);
    }

    // emboss hope logo
    translate([-11, -11.25, 12.6]) scale([0.35, 0.35, 1]) linear_extrude(1) import("HFF_standalone_H_RGB.svg");
  }
}