From 7c252316f9f48b102c6db889647851dd6f2ed38e Mon Sep 17 00:00:00 2001 From: Neale Pickett Date: Sun, 31 Dec 2023 10:24:31 -0700 Subject: [PATCH] check in some work on a simplified chanter --- model/simple.scad | 161 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 model/simple.scad diff --git a/model/simple.scad b/model/simple.scad new file mode 100644 index 0000000..46b75b9 --- /dev/null +++ b/model/simple.scad @@ -0,0 +1,161 @@ +// Based on O'Flynn Rowsome Chanter Measurements +// http://pipers.ie/source/media/?mediaId=31307&galleryId=1353 + +// DIameter of screw hole +Screwhole = 4; // [1:10] + +// Part to generate +Part = "all"; // [all, top-front, top-back, bottom-front, bottom-back] + + +module metal() { + color("silver") children(); +} + +module leather() { + color("sienna") children(); +} + +module ivory() { + color("wheat") children(); +} + +module wood() { + color("saddlebrown") children(); +} + +// A shape like a hamburger patty +module patty(h, d) { + intersection() { + cylinder(h=h, d=d); + translate([0, 0, h/2]) { + resize([d, d, h*3]) { + sphere(d=d); + } + } + } +} + +// A cylinder with something like a compression fitting around it +module ringyding(h, id, od) { + margin = h * 0.1; + union() { + leather() cylinder(h=h, d=id); + translate([0, 0, margin]) ivory() patty(h=h*0.8, d=od); + } +} + +// A fillet is a sort of trumpet bell shape +module fillet(h, d1, d2) { + r = abs(d1-d2)/2; + resize([d1, d1, h]) { + rotate_extrude() { + translate([d2/2, 0, 0]) { + difference() { + square([r, r]); + translate([r, r]) circle(r=r); + } + } + } + } +} + +// An upside-down fillet +module tellif(h, d2, d1) { + translate([0, 0, h]) mirror([0, 0, 1]) fillet(h, d1, d2); +} + +// Absolutely nothing: helps make the code look better +module nothing(h) { +} + +// Just a rotated cylinder +// h: height of the *top* of the protrusion +// d: height of the protrusion (diameter?) +// protrusion: amount of protrusion +module bumpout(h, d, protrusion) { + intersection() { + translate([0, -protrusion, h-d]) { + cylinder(h=d, d=20.4); + } + translate([0, -protrusion, h-d/2]) { + sphere(d=protrusion*4); + } + translate([0, 0, h-d]) { + cylinder(h=d, d1=19, d2=50); + } + } +} + + +// A tonehole with : +// * height=h +module tonehole(h) { + translate([0, 5, h]) { + rotate(a=90, v=[1, 0, 0]) { + resize([Screwhole, Screwhole, 100]) { + cylinder(h=100, d=100); + } + } + } +} + +module chanter() { + difference() { + union() { + translate([0, 0, 0]) metal() cylinder(h=22.0, d=17.1); + translate([0, 0, 22]) wood() cylinder(h=23.5, d=17.1); // Rings go around this + + // Decorative stuff on the bottom + translate([0, 0, 32]) { + translate([0, 0, 0.0]) ivory() patty(h=3.4, d=28.7); + translate([0, 0, 3.4]) leather() fillet(h=1.8, d1=27, d2=22); + translate([0, 0, 4.1]) ringyding(h=4.1, id=21, od=24); + translate([0, 0, 8.2]) ringyding(h=5.3, id=21, od=24); + } + + // A taper on that bottom ring so it will print nicely + translate([0, 0, 12]) wood() tellif(h=20, d1=25.5, d2=100); + + // Main body + translate([0, 0, 45.5]) wood() cylinder(h=244.9, d1=20.4, d2=18); + + // Top decoration + translate([0, 0, 290.4]) { + color("silver") cylinder(h=40.8, d=17); + + translate([0, 0, 0.0]) ringyding(h=5.5, id=19, od=21); + translate([0, 0, 5.5]) nothing(h=9.7); // metal + translate([0, 0, 15.2]) ringyding(h=4.3, id=18, od=20.7); + translate([0, 0, 19.5]) nothing(h=6.7); // metal + translate([0, 0, 26.2]) ivory() patty(h=2, d=20.2); + translate([0, 0, 28.2]) leather() tellif(h=8, d2=19, d1=23); + translate([0, 0, 36.2]) ivory() patty(h=4.6, d=25.4); + } + + // I presume this protects the reed and provides a place for tubing to connect + translate([0, 0, 324.5]) metal() cylinder(h=32.7, d=14.8); + + // Bumpouts + // These angles are my best guess based on photos + rotate(220) wood() bumpout(161.2, 14.8, 6); // protrusion guessed + } + + // Tone Holes! + translate([0, 0, 5]) { // This offset is specified nowhere. I'm guessing to make it fit the bumpouts. + rotate(180) tonehole(263.0); // back D + rotate(0) tonehole(246.4); // C♯ + rotate(0) tonehole(216.2); // B + rotate(0) tonehole(182.0); // A + rotate(0) tonehole(147.4); // G + rotate(0) tonehole(116.2); // F♯ + rotate(0) tonehole(84.7); // E + rotate(-10) tonehole(53.3); // E♭ + } + } +} + +intersection() { + chanter(); + cube(400); +}