GuitarModels/CFTubes.scad

include <common.scad>
include <UBassTuner.scad>
include <NylonTuner.scad>

include <CFTubes/common.scad>
// Choose your material by only including one of the below
include <CFTubes/PLA.scad>
// include <CFTubes/PETG.scad>

// Guitar_Scale_Length_mm = 610;  // millimetres, slightly over 24inch (609.6mm) Jaguar scale, should be fine for guitar and u-bass
// assert(fret_scale_length(0) == 610);  // Make sure the function correctly uses our changed global

// Philippians 4:8
// Gideon (ShinKaiYaku07) 真実な, 尊ぶべき, 正しい, 清い, 愛すべき, 評判の良い, 徳とされる, 称賛に値する
// ShinKaiYaku65 最後に、兄弟たち。すべての真実なこと、すべての誉れあること、すべての正しいこと、すべてのきよいこと、すべての愛すべきこと、すべての評判の良いこと、そのほか徳と言われること、称賛に値することがあるならば、そのようなことに心を留めなさい。
// I swapped 愛 and 評判 because 12th fret should be the biggest marker, and having only 15 as a 2char marker would be too disorienting
// going with 良 for 21
fret_inlays = [[3, "真"], [5, "尊"], [7, "正"], [9, "清"], [12, "評判"], [15, "愛"], [17, "徳"], [19, "賛"], [21, "良"], [24, "主イエス"]];
// Galatians 5:22-23
// ShinKaiYaku65 22しかし、御霊の実は、愛、喜び、平安、寛容、親切、善意、誠実、 23柔和、自制です。このようなものを禁ずる律法はありません。
// 愛  喜び  平安  寛容  親切  善意  誠実  柔和  自制

module neck(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, target_neck_thickness_additional_points=[], scallop_depth=3, num_frets=24, fret_width=2.4, filler=false, inlays_only=false, side_markers_only=false, fret_layers_only=false, remove_fret_layers=false, engrave_markers=true) {
	fw2 = fret_width/2;
	neck_length = fret_scale_length(0)+fw2;
	neck_width = (num_strings-1)*string_spacing + string_margin*2;
	module neck_stock() {
		angle_excess = asin((scallop_depth+fw2)/target_neck_thickness);
		a0 = 90-angle_excess;
		a1 = 270+angle_excess;
		rotate([-90, 0, 0])
			if (len(target_neck_thickness_additional_points) < 1) {
				linear_extrude(neck_length)
				polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)]]);  // Ellipse
			} else {
				pts = flatten([[[neck_length, target_neck_thickness]], target_neck_thickness_additional_points]);
				echo(pts);
				for (i = [0:len(pts)-2]) {
					pt0 = pts[i];
					pt1 = pts[i+1];
					echo(i, pt0, pt1);
					render() hull() {
						translate([0,0,pt0[0]]) linear_extrude(0.01)
							polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -pt0[1]*cos(a)]]);  // Ellipse
						translate([0,0,pt1[0]]) linear_extrude(0.01)
							polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -pt1[1]*cos(a)]]);  // Ellipse
					}
				}
			}
	}
	module scallop(fret) {
			x0 = fret_scale_length(fret-1) - fw2;
			x1 = fret_scale_length(fret) + fw2;
			xmid = lerp(x0, x1, 0.5);
			// Radius it?
			arc = arc_points([[x0, scallop_depth], [x1, scallop_depth], [xmid, 0]]);
			// echo(arc);
			rotate([90, 0, 90]) linear_extrude(neck_width, center=true) polygon(arc);
	}
	module scallops() {
		for (fret = [0:num_frets]) {
			scallop(fret);
		}
	}
	module fret_bumps() {
		for (fret = [0:num_frets]) {
			translate([0, fret_scale_length(fret), scallop_depth])
				rotate([0, 90]) cylinder(d=fret_width, h = neck_width, center = true, $fn=200);
		}
	}
	module intersect_fret_layers() {
		for (fret = [0:num_frets]) {
			translate([-500, fret_scale_length(fret)-fret_width/2, -500])
				cube([1000, fret_width, 1000]);
		}
		// Some precision error with fret 0 :/
		translate([-500, fret_scale_length(0)-fret_width/2+0.0006, -500])
			cube([1000, fret_width, 1000]);
	}
	module fret_inlays() {
		for (num_text = fret_inlays) {
			fret = num_text[0];
			if (fret <= num_frets) {
				x0 = fret_scale_length(fret-1);
				x1 = fret_scale_length(fret);
				diff = x0 - x1;
				translate([0, lerp(x0, x1, 0.5), -0.5])
					linear_extrude(30)
					text(text = num_text[1], font = JP_Sans_Font, halign = "center", valign = "center", size = clamp(2, diff-fret_width*2-2, 10));
			}
		}
	}
	module fret_side_markers() {
		for (num_text = fret_inlays) {
			fret = num_text[0];
			if (fret <= num_frets) {
				x0 = fret_scale_length(fret-1);
				x1 = fret_scale_length(fret);
				diff = x0 - x1;
				mid = lerp(x0, x1, 0.67);
				rotate([0, -94, 0])
					translate([0, mid, neck_width/2-3])
					linear_extrude(50)
					rotate(-37)
					text(text = str(fret), font = JP_Serif_Font, halign = "right", valign = "center", size = 5);
			}
		}
	}

	module carved_stock() {
		render() difference() {
			neck_stock();
			scallops();
			scallop(num_frets+1);
			// Chop off anything above the frets
			translate([-neck_width, 0, scallop_depth]) cube([neck_width*2, Guitar_Scale_Length_mm*3, target_neck_thickness*3]);
			// Reduce rest of the body to 0
			translate([-neck_width, 0, 0]) cube([neck_width*2, (fret_scale_length(num_frets)+fret_scale_length(num_frets+1))/2, target_neck_thickness*3]);
		}
		intersection() {
			fret_bumps();
			neck_stock();
		}
	}

	if (filler) {  // Somewhat placeholder for now
		difference() {
			neck_stock();
			scallop(25);
			translate([-neck_width, 0, scallop_depth]) cube([neck_width*2, Guitar_Scale_Length_mm*3, target_neck_thickness*3]);
			translate([-neck_width, 0, 0]) cube([neck_width*2, (fret_scale_length(25)+fret_scale_length(24))/2, target_neck_thickness*3]);
		}
	} else {
		render() intersection() {
			difference() {
				carved_stock();
				if (engrave_markers) {
					fret_inlays();
					fret_side_markers();
				}
				if (remove_fret_layers) intersect_fret_layers();
			}
			if (fret_layers_only || inlays_only || side_markers_only) union() {
				if (fret_layers_only) intersect_fret_layers();
				if (inlays_only) fret_inlays();
				if (side_markers_only) fret_side_markers();
			}
		}
	}
}

module tailpiece(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, scallop_depth=3, fret_width=2.4*6) {
	fw2 = fret_width/2;
	neck_length = 84;
	neck_width = (num_strings-1)*string_spacing + string_margin*2 + 6 + 6;
	module neck_stock() {
		angle_excess = asin((scallop_depth+fw2)/target_neck_thickness);
		a0 = 90-angle_excess;
		a1 = 270+angle_excess;
		rotate([-90, 0, 0])
			linear_extrude(neck_length)
			polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)]]);
	}
	module scallop(fret) {
			x0 = fret_scale_length(fret-1) - fw2;
			x1 = fret_scale_length(fret) + fw2;
			xmid = lerp(x0, x1, 0.5);
			// Radius it?
			arc = arc_points([[x0, scallop_depth], [x1, scallop_depth], [xmid, 0]]);
			// echo(arc);
			rotate([90, 0, 90]) linear_extrude(neck_width, center=true) polygon(arc);
	}
	module fret_bumps() {
		translate([0, neck_length-fw2, scallop_depth]) rotate([0, 90]) cylinder(d=fret_width, h=neck_width, center = true, $fn=200);
	}

	module differences() {
		t_offset = -30; //2.7;
		t_z = -25; //-23;

		module tuner() {
			hole_r = 3;
			bend_r = 24 + hole_r + 10;
			fn=72;
			rotate([90, -90, 90]) UBassTuner(from_below=true, from_side=true);
			// translate([35,16,0]) cylinder(h=10-t_z, d=7, $fn=72);
			translate([36-7,7,1]) for (a = [10:89]) {
				hull() {
					translate([a/9, bend_r-bend_r*sin(a), bend_r*cos(a)]) sphere(hole_r, $fn=fn);
					translate([(a+1)/9, bend_r-bend_r*sin(a+1), bend_r*cos(a+1)]) sphere(hole_r, $fn=fn);
					translate([7, bend_r-bend_r*sin(a+1), bend_r*cos(a+1)]) sphere(hole_r, $fn=fn);
				}
			}
		}
		                translate([t_offset, 49, t_z]) tuner();
		mirror([1,0,0]) translate([t_offset, 27, t_z]) tuner();
		                translate([t_offset,  5, t_z]) tuner();
			for (i = [-1:2:1])
				translate([i*15, 0, -4])
				CFTubeCutout(neck_length, 0, tolerance=0.4);
			translate([0, 0, -10])
				CFTubeCutout(neck_length, 0, tolerance=0.4);
	}
	thick = 34;
	render() difference() {
		color([1,1,1,0.7]) translate([-neck_width/2, 0, -thick]) round_cube([neck_width, neck_length, thick], 4);
		differences();
	}
	// color([1,1,1,0.3]) neck_stock();
}

module fret_tube(from_fret, to_fret, fret_width=2.4) {
	fw2 = fret_width/2;
	x0 = fret_scale_length(0)+fw2;
	x1 = fret_scale_length(from_fret) + ((from_fret==0) ? fw2 : (-fw2));
	x2 = fret_scale_length(to_fret)-fw2;
	render() difference() {
		neck(fret_width=fret_width);
		for (i = [-1:2:1])
			translate([i*15, 0, -4])
			CFTubeCutout(x1, x2);
		for (i = [-1:2:1])
			translate([i*7.5, 0, -7])
			CFSquareCutout(x1, x2);
		translate([0, 0, -10])
			CFTubeCutout(x1, x2);

		translate([-50, 0, -50]) cube([100, x2, 100]);
		translate([-50, x1, -50]) cube([100, x0-x1, 100]);

		// αβγδεζ
		rotate([90, 0, 0]) linear_extrude((x2+0.3)*2, center=true)  text(text = "01β", font = "Deja Vu Sans", halign = "center", valign = "center", size = 4);
	}
}

module fret_tube_filler(from_fret, to_fret, fret_width=2.4, belthole_length=140, VLH=true) {
	fw2 = fret_width/2;
	x0 = fret_scale_length(0)+fw2;
	x1 = fret_scale_length(from_fret) + ((from_fret==0) ? fw2 : (-fw2));
	x2 = (to_fret < 100) ? (fret_scale_length(to_fret)-fw2) : 0;
	render() difference() {
		neck(fret_width=fret_width, filler=true);
		for (i = [-1:1])
			translate([i*15, 0, (i==0)?(-10):(-4)])
			CFTubeCutout(x1, x2, VLH=VLH);

		translate([-50, 0, -50]) cube([100, x2, 100]);
		translate([-50, x1, -50]) cube([100, x0-x1, 100]);

		// Add a belt hole
		arc = arc_points([[16, -20], [-16, -20], [0, -4]]);
		belthole_r = 2.5;
		belthole_fn = 72;
		belthole_x0 = x1-belthole_r-5;
		belthole_x1 = belthole_x0 - belthole_length;
		render() for (i = [0:len(arc)-2]) {
			hull() {
				translate([arc[i][0], belthole_x0, arc[i][1]]) sphere(belthole_r, $fn=belthole_fn);
				translate([arc[i+1][0], belthole_x0, arc[i+1][1]]) sphere(belthole_r, $fn=belthole_fn);
				translate([arc[i][0], belthole_x1, arc[i][1]]) sphere(belthole_r, $fn=belthole_fn);
				translate([arc[i+1][0], belthole_x1, arc[i+1][1]]) sphere(belthole_r, $fn=belthole_fn);
			}
		}

		// αβγδεζ
		t = "01β.β";
		translate([0,0,-3.5]) rotate([90, 0, 0]) linear_extrude((x2+0.3)*2, center=true)  text(text = t, font = "Deja Vu Sans", halign = "center", valign = "center", size = 4);
		translate([0,x1-0.3,-3]) rotate([90, 0, 180]) linear_extrude((0.3)*2, center=true)  text(text = t, font = "Deja Vu Sans", halign = "center", valign = "center", size = 4);
	}
}

module headpiece(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, scallop_depth=3, fret_width=2.4) {
	headpiece_length = 36;
	cf_square_length = 32;
	fw2 = fret_width/2;
	x0 = fret_scale_length(0)+fw2;
	neck_width = (num_strings-1)*string_spacing + string_margin*2;
	bend_radius = 24;

	module stock() {
		angle_excess = asin(scallop_depth/target_neck_thickness);
		a0 = 90-angle_excess;
		a1 = 270+angle_excess;
		translate([0, x0, 0])
			rotate([-90, 0, 0])
				linear_extrude(headpiece_length)
				polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)]]);
	}
	module string_tubes(tolerance = 1.0) {
		string_thicknesses = [4.9, 4.2, 3.0];
		module string_tube(diameter, fn=36) {
			hole_r = diameter/2;
			bend_r = bend_radius + hole_r;
			union() {
				for (a = [0:89]) {
					hull() {
						translate([0, bend_r*sin(a), bend_r*cos(a)]) sphere(hole_r, $fn=fn);
						translate([0, bend_r*sin(a+1), bend_r*cos(a+1)]) sphere(hole_r, $fn=fn);
					}
				}
				hull() {
					translate([0, bend_r*sin(90), bend_r*cos(90)]) sphere(hole_r, $fn=fn);
					translate([0, bend_r*sin(90), -target_neck_thickness]) sphere(hole_r, $fn=fn);
				}
			}
		};
		for (i = [0:num_strings-1]) {
			string_diameter = string_thicknesses[i] + tolerance;
			x = -neck_width/2 + string_margin + (i*string_spacing);
			translate([x, x0+2, -bend_radius+scallop_depth]) string_tube(string_diameter);
		}
	}
	difference() {
		stock();
		string_tubes();
		for (i = [-1:2:1])
			translate([i*7.5, 0, -7])
				CFSquareCutout(x0+cf_square_length, x0, taper_x1=false);
		// αβγδεζ
		translate([0, x0+headpiece_length, -5]) rotate([90, 0, 180]) linear_extrude(0.3, center=true)  text(text = "01β.γ", font = "Deja Vu Sans", halign = "center", valign = "center", size = 4);
	}
}

module bridge(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, scallop_depth=3, fret_width=2.4) {
	piece_length = 16;
	cf_square_length = 32;
	fw2 = fret_width/2;
	x0 = 0;
	neck_width = (num_strings-1)*string_spacing + string_margin*2;
	bend_radius = 24;
	string_thicknesses = [4.9, 4.2, 3.0];

	module stock() {
		angle_excess = asin(scallop_depth/target_neck_thickness);
		a0 = 90-angle_excess;
		a1 = 270+angle_excess;
		translate([0, x0, 0])
			rotate([-90, 0, 0])
				linear_extrude(piece_length)
				polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)]]);
		intersection() {
			r = 14;
			translate([0,8,scallop_depth]) rotate([18, -90, 0]) scale([1,0.2,1]) cylinder(r=r, h=neck_width*1.5, center=true, $fn=72);
			a0 = -90;
			a1 = 90;
			translate([0, x0, 0])
				rotate([-90, 0, 0])
					linear_extrude(piece_length)
					polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)*3]]);
		}
	}
	module string_tubes(tolerance = 1.0) {
		module string_tube(diameter, fn=36) {
			hole_r = diameter/2;
			bend_r = bend_radius + hole_r;
			union() {
				for (a = [0:89]) {
					hull() {
						translate([0, bend_r*sin(a), bend_r*cos(a)]) sphere(hole_r, $fn=fn);
						translate([0, bend_r*sin(a+1), bend_r*cos(a+1)]) sphere(hole_r, $fn=fn);
					}
				}
				hull() {
					translate([0, bend_r*sin(90), bend_r*cos(90)]) sphere(hole_r, $fn=fn);
					translate([0, bend_r*sin(90), -target_neck_thickness]) sphere(hole_r, $fn=fn);
				}
			}
		};
		for (i = [0:num_strings-1]) {
			string_diameter = string_thicknesses[i] + tolerance;
			x = -neck_width/2 + string_margin + (i*string_spacing);
			// translate([x, x0+2, -bend_radius+scallop_depth]) string_tube(string_diameter);
			translate([x, 0, scallop_depth+string_diameter/2+8]) rotate([-90,0,0]) cylinder(d=string_diameter, h=20, $fn=72);
		}
	}
		// string_tubes();
	difference() {
		stock();
		string_tubes();
		for (i = [-1:1])
			translate([i*15, 0, (i==0)?(-10):(-4)])
				CFTubeCutout(piece_length+0.1, x0-0.1, VLH=false);
		// αβγδεζ
		translate([0, x0+piece_length, -5]) rotate([90, 0, 180]) linear_extrude(0.3, center=true)  text(text = "01β", font = "Deja Vu Sans", halign = "center", valign = "center", size = 4);
	}
}

module Nylon6String(render_colour_0=true, render_colour_1=true, render_colour_2=true, render_colour_3=true, from_fret=0, to_fret=1, reference=false) {
	colour_0 = "blue";
	colour_1 = "white";  // fret layers
	colour_2 = "green";  // side markers
	colour_3 = "yellow";  // inlays
	id_line_0 = "PLA";
	id_line_1 = "1δ";
	fsl_mm = fret_scale_length(0);

	string_diameters_thous = [28, 32, 40, 30, 36, 42];
	string_diameters_mm = string_diameters_thous * 0.0254;

	num_frets = 21;
	num_strings = 6;
	// 56mm wide neck
	string_spacing = 10;  // 50mm E to e
	string_margin = 3;  // +6
	neck_width = string_spacing*(num_strings-1) + string_margin*2;
	scallop_depth = 2.5;
	fret_width=2.4;
	target_neck_thickness = 16; //22;
	// echo(fret_scale_length(8));
	// echo(fret_scale_length(9));
	rx0 = -40;  // Reinforcing rods start
	rx1 = rx0+280;

	// target_neck_thickness_additional_points = [];
	target_neck_thickness_additional_points = [[rx0+CF_Tube_Len+20, 22], [0, 22]];
	// target_neck_thickness_additional_points = [[400.025-fret_width/2, 22], [380, 25], [130, 42], [0, 42]];
	// target_neck_thickness_additional_points = [[400.025-fret_width/2, 22], [380, 25], [0, 25]];
	// target_neck_thickness_additional_points = [[400.025-fret_width/2, 22], [130, 42], [0, 42]];

	echo(str("Making a Nylon 6 String with scale length ", fsl_mm, "mm = ", fsl_mm/25.4, "in and neck width ", neck_width, "mm"));
	assert(fsl_mm == Classical_Short_Scale_mm);  // Make sure the function correctly uses our changed global

	function CF_Span_Coords(full_length = 700, ply = 3) = [for (i=[0:ply-1]) [0, lerp(0, full_length-CF_Tube_Len, i/(ply-1)), CF_Square_Width*i]];
	module CF_Span(full_length = 700, ply = 3, hole = true) {
		for (v = CF_Span_Coords(full_length, ply))
			translate(v) CFSquare(hole=hole);
	}
	module MyNeck(inlays_only=false, side_markers_only=false, fret_layers_only=false, engrave_markers=false, remove_fret_layers=false) {
		render() neck(num_frets=num_frets, num_strings=num_strings, string_margin=string_margin, string_spacing=string_spacing, scallop_depth=scallop_depth, target_neck_thickness=target_neck_thickness, target_neck_thickness_additional_points=target_neck_thickness_additional_points, inlays_only=inlays_only, side_markers_only=side_markers_only, fret_layers_only=fret_layers_only, engrave_markers=engrave_markers, remove_fret_layers=remove_fret_layers);
	}
	module MultiColourNeck() {
		if (render_colour_0) color(colour_0) MyNeck(engrave_markers=true, remove_fret_layers=true);
		if (render_colour_1) color(colour_1) MyNeck(fret_layers_only=true);
		if (render_colour_2) color(colour_2) MyNeck(side_markers_only=true);
		if (render_colour_3) color(colour_3) MyNeck(inlays_only=true);
	}

	reinforcing_tube_positions = flatten([
		[
			for (i=[-1,1]) each [
				// Headside reinforcement
				[i*21.5, rx1, -4],
				// Bridgeside reinforcement
				// [i*21.5, rx0, -4],
				[i*17.25, rx0, -10],
				// [i*17, rx0, -12],
				[i*3.95, rx0, -16.5],
			]
		],
		[
			// Headside reinforcement
			[0, rx1, -4],
			[0, rx1, -11],
			// Bridgeside reinforcement
			// [0, rx0, -11],
		]]);
	echo(reinforcing_tube_positions);
	// Through span construction
	span_coords = CF_Span_Coords(ply=2);
	reinforcing_square_positions = [
		for (i=[-1,1]) each [ for (v = span_coords) [i*10, rx0, -10] + v ]
	];
	echo(reinforcing_square_positions);


	// neck(num_frets=num_frets, num_strings=num_strings, string_margin=string_margin, string_spacing=string_spacing);
	// %neck(num_frets=num_frets, num_strings=num_strings, string_margin=string_margin, string_spacing=string_spacing, scallop_depth=scallop_depth, target_neck_thickness=target_neck_thickness);
	module NeckFragment(from_fret, to_fret, to_origin=true, include_from_fret=false, test_tolerances_piece=false) {
		x0 = fret_scale_length(to_fret) - fret_width/2;
		x1 = fret_scale_length(from_fret) + ((include_from_fret)?1:(-1)) * fret_width/2;
		xn = fsl_mm + fret_width;

		module TestTolerancesPiece() {
			for (m=[0,11]) mirror([m, 0, 0]) color([0.4, 0.5, 0.5]) translate([9, 0, -16+(CF_Square_Width*2)]) CFSquareCutout(x0, x1, taper_length=2);
			translate([ 12,0,-14]) CFSquareCutout(x0, x1, taper_length=2);
			translate([ 12-CF_Square_Width,0,-14]) CFSquareCutout(x0, x1-8, taper_length=2, taper_x2=false);
			translate([-12,0,-14]) CFSquareCutout(x0, x1, taper_length=2);
			translate([-12+CF_Square_Width,0,-14]) CFSquareCutout(x0+8, x1, taper_length=2, taper_x1=false);
			translate([20,0,-6]) CFTubeCutout(x0, x1, taper_length=2);
		}

		translate([0,to_origin ? -x0 : 0,0]) render() difference() {
			MultiColourNeck();
			color(colour_1) {
				translate([-100, 0, -100]) cube([200, x0, 200]);
				translate([-100, x1, -100]) cube([200, xn-x1, 200]);
				for (v = reinforcing_tube_positions) CFTubeCutout2(v, x0, x1);
				for (v = reinforcing_square_positions) CFSquareCutout2(v, x0, x1);
				if (test_tolerances_piece) TestTolerancesPiece();
			}
		}
	}

	// Test tolerances piece
	module TestTolerancesPiece() {
		difference(){
			NeckFragment(2, 3, test_tolerances_piece=true);
			translate([-20,0,-1]) rotate([-90,180,180]) linear_extrude(3, center=true) text(id_line_0, size=3.5, halign="center", valign="center");
			translate([-20,0,-6]) rotate([-90,180,180]) linear_extrude(3, center=true) text(id_line_1, size=3.5, halign="center", valign="center");
		}
	}
	// TestTolerancesPiece();

	module RealPiece(from_fret, to_fret, include_from_fret=false) {
		midpoint = (fret_scale_length(from_fret) - fret_scale_length(to_fret) + (include_from_fret ? fret_width : 0))/2;
		module IDText(thickness = 0.2, inset = 0, extra_line=str("F", to_fret)) {
			translate([0,0,-8]) rotate([-90,180,180]) translate([0,0,-thickness-inset]) linear_extrude(thickness) {
				text(str(id_line_0, id_line_1), size=2.25, halign="center", valign="center", $fn=100);
				translate([0,-3]) text(extra_line, size=2.25, halign="center", valign="center", $fn=100);
			}
		}
		module BackIDText(thickness = 0.2, inset = 0) {
			rotate_around([0,0,180], [0,midpoint,0])
				IDText(thickness, inset, str("F", from_fret));
		}
		render() difference(){
			NeckFragment(from_fret, to_fret, include_from_fret=include_from_fret);
			// Subtract from frets
			color("red") {
				IDText();
				if (include_from_fret) BackIDText();
			}
			color("red") BackIDText();
		}
		// // color("red") IDText(inset=0.0001);
		// if (render_colour_0) color(colour_1) IDText();
		// if (render_colour_0 && include_from_fret) color(colour_1) BackIDText();
		// if (render_colour_1 && !include_from_fret) color("red") BackIDText();
	}

	module HeadPiece() {
		x0 = fret_scale_length(0) + fret_width/2;
		end_radius = 12;
		x1 = x0 - rx0 + end_radius;
		module StringHoles() {
			for (i = [0:num_strings-1]) translate([(num_strings-i-1)*string_spacing - neck_width/2 + string_margin,0,0]) {
				translate([0,0,scallop_depth+fret_width/2+string_diameters_mm[i]]) rotate([-105,0,0]) cylinder(h=30, d=string_diameters_mm[i]*2, $fn=cyl_ld_fn);
				// translate([0,23,-4]) rotate([-150,0,0]) translate([0,0,0]) cylinder(h=20, d=4, $fn=cyl_ld_fn);
				hull() {
					translate([0,29,-3.5]) sphere(d=5.5, $fn=360);
					translate([0,29+11,-17]) sphere(d=7, $fn=360);
				}
			}
		}
		render() difference(){
			hull() {
				translate([0,fret_width/2,0]) scale([neck_width/2, 0.01, target_neck_thickness]) sphere(r=1, $fn=360);
				translate([0,-rx0-end_radius,0]) scale([neck_width/2, end_radius, target_neck_thickness*0.93]) sphere(r=1, $fn=360);
			}
			translate([-500, 0, scallop_depth]) cube([1000, 1000, 1000]);
			translate([-500, fret_width/2 - 1000, -500]) cube([1000, 1000, 1000]);
			translate([0, -fret_scale_length(0), 0]) {
				for (v = reinforcing_tube_positions) CFTubeCutout2(v, x0, x1);
				for (v = reinforcing_square_positions) CFSquareCutout2(v, x0, x1);
			}
			StringHoles();
			translate([-10,fret_width/2+1,-10]) rotate([90,0,0]) linear_extrude(10) {
				text(str(id_line_0, id_line_1), size=2.9, halign="center", valign="center", $fn=100);
			}
		}
		// StringHoles();
	}

	if (reference) {
		union() {
			c_cf = [0.4, 0.5, 0.5];
			%MyNeck();
			// CF square stacks
			for (v = reinforcing_tube_positions) color(c_cf) translate(v) CFTube();
			for (v = reinforcing_square_positions) color(c_cf) translate(v) CFSquare();
			// Approximate tuner placement
			for (m=[0,1]) mirror([m, 0, 0]) translate([29,10,-32]) rotate([0,-90,0]) NylonTuner();

			// Render strings above for spacing reference
			string_excess = 80;
			for (i = [0:num_strings-1]) {
				translate([(num_strings-i-1)*string_spacing - neck_width/2 + string_margin,0,5]) rotate([-90,0,0]) translate([0,0,-string_excess/2]) cylinder(h=fsl_mm+string_excess, d=string_diameters_mm[i], $fn=cyl_ld_fn);
			}
		}
	} else if (from_fret >= 0) {
		RealPiece(from_fret, to_fret, include_from_fret = (from_fret==0));
	} else if (from_fret == -1) {
		// String holding headpiece
		echo("Making a headpiece");
		HeadPiece();
	}
	// Debug markers to aid part slicing eyeballing
	// %for (i = [150:250:1000]) {
	%for (i = [0:250:1000]) {
		translate([35,i,0]) union() {linear_extrude(1) text(str(i, "mm")); cube([35, 1, 1], center=true);}
	}
}

// echo(fret_scale_length(0) - fret_scale_length(8));  // 225.724
// echo(fret_scale_length(8) - fret_scale_length(24));  // 240.335
// fret_tube(0, 8);
// //translate([30, 0, 0])
// fret_tube(8, 24);

// headpiece();
// UBassTuner();

// fret_tube_filler(24, 100);
// tailpiece();
// bridge();

Guitar_Scale_Length_mm = Classical_Short_Scale_mm;
// translate([0, Guitar_Scale_Length_mm, 0]) rotate([0,0,180]) Nylon6String(reference=true);
rotate([0,0,180]) Nylon6String(from_fret=-1);

// difference() {
// 	translate([-15, -60, 0]) cube([50, 120, 8]);
// 	translate([0, 55, 3]) rotate([180,0,0]) NylonTuner();
// }