diff --git a/100ft_v2/gnal_100ft.scad b/100ft_v2/gnal_100ft.scad new file mode 100644 index 0000000..3dd4a12 --- /dev/null +++ b/100ft_v2/gnal_100ft.scad @@ -0,0 +1,317 @@ +//V2 + +include <../libraries/gnal.scad>; + +SPOKE_COUNT = 24; +PART=""; + +module gnal_spiral_100ft (spiral_count = 60, od = 298.75) { + outer_d = 299; + outer_d_inside = outer_d - 6; + outer_h = 7.5; + + spoke_len = 123; + spoke_w = 3; + spoke_h = 4.2 + 3; + + spoke_2_len = 85; + + spoke_cross_1_d = 63; + spoke_cross_1_w = 18; + + spoke_cross_2_d = 108; + spoke_cross_2_w = 15; + + spoke_3_len = 39; + spoke_3_w = 2; + + translate([0, 0, -3.6]) difference () { + cylinder(r = outer_d / 2, h = spoke_h, center = true, $fn = 500); + cylinder(r = outer_d_inside / 2, h = outer_h + 1, center = true, $fn = 500); + } + + difference () { + gnal_spiral_core(); + //rounded spoke voids + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([0, 26.75, 0]) { + cylinder(r = 2, h = 20, center = true, $fn = 40); + } + } + } + } + + //main spokes + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, i * (360 / SPOKE_COUNT)]) { + translate([(spoke_len / 2) + (48 / 2), 0, -3.6]) { + cube([spoke_len, spoke_w, spoke_h], center = true); + } + } + } + //secondary spokes + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([(outer_d / 2) - (spoke_2_len / 2) - 2, 0, -3.6]) { + cube([spoke_2_len, spoke_w, spoke_h], center = true); + } + } + } + //spoke cross bars + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([63, 0, -3.6]) { + rotate([0, 0, 20]) { + cube([ spoke_w, 18, spoke_h], center = true); + } + } + } + } + + //second spokes + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([(outer_d / 2) - (spoke_2_len / 2) - 2, 0, -3.6]) { + cube([spoke_2_len, spoke_w, spoke_h], center = true); + } + } + } + + //second spoke cross pieces + for (i = [0 : SPOKE_COUNT * 2]) { + rotate([0, 0, (i + 0.5) * (360 / (SPOKE_COUNT * 2))]) { + translate([spoke_cross_2_d, 0, -3.6]) { + rotate([0, 0, -20]) { + cube([ spoke_w, spoke_cross_2_w, spoke_h], center = true); + } + } + } + } + + //third spokes + for (i = [0 : SPOKE_COUNT * 2]) { + rotate([0, 0, (i + 0.5) * (360 / (SPOKE_COUNT * 2))]) { + translate([(outer_d / 2) - (spoke_3_len / 2) - 2, 0, -3.6]) { + cube([spoke_3_len, spoke_3_w, spoke_h], center = true); + } + } + } + + //translate([0, 0, 1]) rotate([0, 0, 0]) spiral_2 (START_D = 46.95, SPIRALS = spirals); //12 //40 + //translate([0, 0, -.1]) rotate([0, 0, -90]) film_guide(spiral_count, 298.75); + //translate([0, 0, -.1]) spirals_old(spiral_count, 46.95 - 1.2, 2.075); + + translate([0, 0, -.1]) { + rotate([0, 0, -90]) { + difference () { + film_guide(spiral_count, od); + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT) ]) { + translate([(83 / 4) + (48 / 2), 0, -3.6]) triangle_void(); + } + } + for (i = [0 : SPOKE_COUNT * 2]) { + rotate([0, 0, (i + 0.5) * (360 / (SPOKE_COUNT * 2)) ]) { + translate([(258 / 2) - (spoke_2_len / 2) + 1 , 0, -3.6]) triangle_void_2(); + } + } + for (i = [0 : SPOKE_COUNT * 4]) { + rotate([0, 0, (i + 0.5) * (360 / (SPOKE_COUNT * 4)) ]) { + if (i % 2 == 0) { + translate([(outer_d / 2) - (spoke_3_len / 2) + 1 , 0.3, -3.6]) triangle_void_3(); + } else { + translate([(outer_d / 2) - (spoke_3_len / 2) + 1, -0.3, -3.6]) triangle_void_3(); + } + } + } + } + } + } +} + +module spacer_ridges () { + ridges = 16; + for (i = [0 : ridges]) { + rotate([0, 0, i * (360 / ridges)]) translate([13.5, 0, 0]) cylinder(r = 1.25, h = 8, $fn = 60); + } +} + +module spacer_ridges_loose () { + ridges = 16; + intersection () { + union () { + for (i = [0 : ridges]) { + rotate([0, 0, i * (360 / ridges)]) translate([13.7, 0, 0]) cylinder(r = 1.25, h = 8, $fn = 60); + } + } + cylinder(r = 13.7, h = 12, center = true); + } +} +module spacer_outer_ridges () { + ridges = 24; + H = 6.5; + difference () { + union () { + for (i = [0 : ridges]) { + rotate([0, 0, i * (360 / ridges)]) translate([14.6, 0, -4.75]) cylinder(r = 1.25, h = 8, $fn = 30); + } + } + translate([0, 0, -4.1]) difference () { + cylinder(r = 33 / 2, h = 4, center = true, $fn = 100); + cylinder(r2 = 33 / 2, r1 = 27.75 / 2, h = 4.1, center = true, $fn = 100); + } + } +} +module gnal_spiral_100ft_spacer () { + add = 3.25; + core_d = 29.5; + core_bottom_d = 26.2 + .2; + void_d = 22.5; + h = 8 + add; + translate([0, 0, (add / 2) - 1]) difference () { + union () { + difference () { + cylinder(r = core_d / 2, h = h, center = true, $fn = 200); + translate([0, 0, 8]) cylinder(r = core_bottom_d / 2, h = h, center = true, $fn = 200); + cylinder(r = void_d / 2, h = h + 1, center = true, $fn = 200); + } + translate([0, 0, 0]) spacer_ridges_loose(); + spacer_outer_ridges(); + } + //trim top + translate([0, 0, h - 0.1]) cylinder(r = (core_d + 1) / 2, h = h, center = true, $fn = 200); + //trim bottom + translate([0, 0, -h + 0.9]) cylinder(r = (core_d + 1) / 2, h = h, center = true, $fn = 200); + //finger grips + //translate([0, 24, 0]) rotate([-6, 0, 0]) cylinder(r = 10, h = 6, center = true, $fn = 100); + //translate([0, -24, 0]) rotate([6, 0, 0]) cylinder(r = 10, h = 6, center = true, $fn = 100); + } +} + +module gnal_100ft_top () { + H = 5; + center_d = 53; + spoke_w = 4.5; + spokes = 12; + outer_d = 299; + inner_d = 150; + inner_d_2 = 215; + void_d = 22.5; + hole_d = 3.5; + hole_spacing = 37; + core_d = 29.5; + core_bottom_d = 26.2; + + difference () { + union () { + cylinder(r = center_d / 2, h = H, center = true, $fn = 100); + for (i = [0 : spokes]) { + rotate([0, 0, i * (360 / spokes)]) translate([0, outer_d / 4, 0]) cube([spoke_w, (outer_d / 2) - 1, H], center = true); + } + //outer spokes + for (i = [0 : spokes * 2]) { + rotate([0, 0, i * (360 / (spokes * 2))]) translate([0, (outer_d / 2) - 25, 0]) cube([spoke_w, (outer_d / 2) - (inner_d_2 / 2) , H], center = true); + } + } + //void + cylinder(r = void_d / 2, h = H + 1, center = true, $fn = 100); + //speed holes + for (i = [0 : 3]) { + rotate([0, 0, (i * 90) + 45]) translate([0, hole_spacing / 2, 0]) cylinder(r = hole_d / 2, h = H + 1, center = true); + } + //rounding of center cylinder + for (i = [0 : spokes]) { + rotate([0, 0, (i + 0.5) * (360 / spokes)]) translate([-2.75, 26.5, 0]) cylinder(r = 2, h = H+1, center = true, $fn = 40); + rotate([0, 0, (i + 0.5) * (360 / spokes)]) translate([2.75, 26.5, 0]) cylinder(r = 2, h = H+1, center = true, $fn = 40); + rotate([0, 0, (i + 0.5) * (360 / spokes)]) translate([0, 26.5, 0]) cube([5, 4, H + 1], center = true); + } + } + difference () { + cylinder(r = (center_d / 2) - 1.8, h = H, center = true, $fn = 200); + cylinder(r = (hole_spacing / 2) + 2, h = H + 1, center = true, $fn = 200); + } + //outer ring + difference () { + cylinder(r = outer_d / 2, h = H, center = true, $fn = 200); + cylinder(r = (outer_d / 2) - 5, h = H + 1, center = true, $fn = 200); + } + //inner ring + difference () { + cylinder(r = inner_d / 2, h = H, center = true, $fn = 200); + cylinder(r = (inner_d / 2) - 5, h = H + 1, center = true, $fn = 200); + } + //second inner ring + difference () { + cylinder(r = inner_d_2 / 2, h = H, center = true, $fn = 200); + cylinder(r = (inner_d_2 / 2) - 5, h = H + 1, center = true, $fn = 200); + } + + //rounded cross connectors + for (i = [0 : spokes]) { + rotate([0, 0, i * (360 / spokes)]) translate([0, (inner_d / 2) - (spoke_w / 2), 0]) difference() { + cylinder(r = 6.5, h = H, center = true); + translate([6.25, 6, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.25, 6, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.1, -7, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([6.1, -7, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + } + } + difference () { + union () { + translate([0, 0, 3.75 + 1]) cylinder(r = core_d / 2, h = H, center = true, $fn = 60); + translate([0, 0, 3.75 + 1 + 3.2]) cylinder(r = core_bottom_d / 2, h = H, center = true, $fn = 60); + } + cylinder(r = void_d / 2, h = H * 5 , center = true, $fn = 100); + translate([0, 0, 4 + 1 + 2.25]) spacer_ridges(); + } + //rounded second ring connectors + for (i = [0 : spokes]) { + rotate([0, 0, i * (360 / spokes)]) translate([0, 205 / 2, 0]) difference () { + translate([0, 2, 0]) cube([13, 12, H], center = true); + translate([6.2, -4.2, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.2, -4.2, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([6.2, 8.75, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.2, 8.75, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + } + } + //second ring connectors + for (i = [0 : spokes * 2]) { + rotate([0, 0, i * (360 / (spokes * 2))]) translate([0, 205 / 2, 0]) difference () { + translate([0, 4, 0]) cube([13, 8, H], center = true); + translate([6.2, 8.75, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.2, 8.75, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + } + } + + for (i = [0 : spokes * 2]) { + rotate([0, 0, i * (360 / (spokes * 2))]) translate([0, 289 / 2, 0]) difference () { + translate([0, 0, 0]) cube([13, 9, H], center = true); + translate([6.2, -4.2, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.2, -4.2, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + } + } +} + + + +module film_guide (rotations = 40, od = 215.75) { + SPIRALROTATION=rotations * 360; + SPIRALSTEPS=180; + INITIALRADIUS= od / 2; //300 / 2; + PITCH=2.07675; + XMAXSHAPE=2; + + InwardSpiral ( + SPIRALROTATION/SPIRALSTEPS, + SPIRALSTEPS, + INITIALRADIUS, + PITCH, + XMAXSHAPE); +} + +if (PART == "spiral") { + gnal_spiral_100ft(); +} else if (PART == "") { + gnal_100ft_top(); +} \ No newline at end of file diff --git a/50ft_v2/gnal_50ft.scad b/50ft_v2/gnal_50ft.scad new file mode 100644 index 0000000..e990ee0 --- /dev/null +++ b/50ft_v2/gnal_50ft.scad @@ -0,0 +1,197 @@ +//V2 + +include <../libraries/gnal.scad>; + +$fn = 20; + +SPOKE_COUNT = 24; + + +module gnal_spiral_50ft (spiral_count = 40, od = 215.75) { + outer_d = 215; + outer_d_inside = 209; + outer_h = 7.5; + + spoke_len = 81; + spoke_w = 3; + spoke_h = 4.2 + 3; + + spoke_2_len = 43; + + translate([0, 0, -3.6]) difference () { + cylinder(r = outer_d / 2, h = spoke_h, center = true, $fn = 500); + cylinder(r = outer_d_inside / 2, h = outer_h + 1, center = true, $fn = 500); + } + + difference () { + gnal_spiral_core(); + //rounded spoke voids + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([0, 26.75, 0]) { + cylinder(r = 2, h = 20, center = true, $fn = 40); + } + } + } + } + //main spokes + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, i * (360 / SPOKE_COUNT)]) { + translate([(spoke_len / 2) + (48 / 2), 0, -3.6]) { + cube([spoke_len, spoke_w, spoke_h], center = true); + } + } + } + //secondary spokes + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([(outer_d / 2) - (spoke_2_len / 2) - 2, 0, -3.6]) { + cube([spoke_2_len, spoke_w, spoke_h], center = true); + } + } + } + //spoke cross bars + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT)]) { + translate([63, 0, -3.6]) { + rotate([0, 0, 20]) { + cube([ spoke_w, 18, spoke_h], center = true); + } + } + } + } + + translate([0, 0, -.1]) { + rotate([0, 0, -90]) { + difference () { + film_guide(spiral_count, od); + for (i = [0 : SPOKE_COUNT]) { + rotate([0, 0, (i + 0.5) * (360 / SPOKE_COUNT) ]) { + translate([(spoke_len / 4) + (48 / 2), 0, -3.6]) triangle_void(); + } + } + for (i = [0 : SPOKE_COUNT * 2]) { + rotate([0, 0, (i + 0.5) * (360 / (SPOKE_COUNT * 2)) ]) { + translate([(outer_d / 2) - (spoke_2_len / 2) + 1 , 0, -3.6]) triangle_void_2(); + } + } + } + } + } +} + +module top () { + H = 5; + center_d = 53; + spoke_w = 4.5; + spokes = 12; + outer_d = 215; + inner_d = 150; + void_d = 22.5; + hole_d = 3.5; + hole_spacing = 37; + core_d = 29.5; + core_bottom_d = 26.2; + + difference () { + union () { + cylinder(r = center_d / 2, h = H, center = true, $fn = 100); + for (i = [0 : spokes]) { + rotate([0, 0, i * (360 / spokes)]) translate([0, outer_d / 4, 0]) cube([spoke_w, (outer_d / 2) - 1, H], center = true); + } + } + //void + cylinder(r = void_d / 2, h = H + 1, center = true, $fn = 100); + //speed holes + for (i = [0 : 3]) { + rotate([0, 0, (i * 90) + 45]) translate([0, hole_spacing / 2, 0]) cylinder(r = hole_d / 2, h = H + 1, center = true); + } + //rounding of center cylinder + for (i = [0 : spokes]) { + rotate([0, 0, (i + 0.5) * (360 / spokes)]) translate([-2.75, 26.5, 0]) cylinder(r = 2, h = H+1, center = true, $fn = 40); + rotate([0, 0, (i + 0.5) * (360 / spokes)]) translate([2.75, 26.5, 0]) cylinder(r = 2, h = H+1, center = true, $fn = 40); + rotate([0, 0, (i + 0.5) * (360 / spokes)]) translate([0, 26.5, 0]) cube([5, 4, H + 1], center = true); + } + } + difference () { + cylinder(r = (center_d / 2) - 1.8, h = H, center = true, $fn = 200); + cylinder(r = (hole_spacing / 2) + 2, h = H + 1, center = true, $fn = 200); + } + //outer ring + difference () { + cylinder(r = outer_d / 2, h = H, center = true, $fn = 200); + cylinder(r = (outer_d / 2) - 5, h = H + 1, center = true, $fn = 200); + } + //inner ring + difference () { + cylinder(r = inner_d / 2, h = H, center = true, $fn = 200); + cylinder(r = (inner_d / 2) - 5, h = H + 1, center = true, $fn = 200); + } + //rounded cross connectors + for (i = [0 : spokes]) { + rotate([0, 0, i * (360 / spokes)]) translate([0, (inner_d / 2) - (spoke_w / 2), 0]) difference() { + cylinder(r = 6.5, h = H, center = true); + translate([6.25, 6, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.25, 6, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.1, -7, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([6.1, -7, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + } + } + difference () { + union () { + translate([0, 0, 3.75 + 1]) cylinder(r = core_d / 2, h = H, center = true, $fn = 60); + translate([0, 0, 3.75 + 1 + 3.2]) cylinder(r = core_bottom_d / 2, h = H, center = true, $fn = 60); + } + cylinder(r = void_d / 2, h = H * 5 , center = true, $fn = 100); + translate([0, 0, 4 + 1 + 2.25]) spacer_ridges(); + } + //rounded outer ring connectors + for (i = [0 : spokes]) { + rotate([0, 0, i * (360 / spokes)]) translate([0, 205 / 2, 0]) difference () { + cube([13, 9, H], center = true); + translate([6.2, -4.2, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + translate([-6.2, -4.2, 0]) cylinder(r = 4, h = H + 1, center = true, $fn = 60); + } + } +} + + + +module film_guide (rotations = 40, od = 215.75) { + SPIRALROTATION=rotations * 360; + SPIRALSTEPS=180; + INITIALRADIUS= od / 2; //300 / 2; + PITCH=2.07675; + XMAXSHAPE=2; + + InwardSpiral ( + SPIRALROTATION/SPIRALSTEPS, + SPIRALSTEPS, + INITIALRADIUS, + PITCH, + XMAXSHAPE); +} + +//difference() { + //spiral(); + //translate([250, 0, 0]) cube([500, 500, 50], center = true); + //rotate([0, 0, 150]) translate([250, 0, 0]) cube([500, 500, 50], center = true); +//} +//color("blue") spiral_bottom_insert_s8(); +//translate([0, 0, 4]) spiral_bottom_insert_16(); +//translate([0, 0, 12.5]) spacer_16(); + +//real 88m24.685s +//user 88m16.804s +//sys 0m6.259s + +//spacer(); +//translate([0, 0, 16 + 8]) spiral(); +//top(); + + +//film_guide (rotations = 10); +//1 Rotation = 0 hours, 0 minutes, 47 seconds +//2 Rotation = 0 hours, 1 minutes, 3 seconds +//3 Rotation = 0 hours, 1 minutes, 15 seconds +//10 Rotation = 0 hours, 4 minutes, 47 seconds \ No newline at end of file diff --git a/libraries/gnal.scad b/libraries/gnal.scad new file mode 100644 index 0000000..e969ac4 --- /dev/null +++ b/libraries/gnal.scad @@ -0,0 +1,453 @@ +//GNAL Shared Library + +include <./path_extrude.scad>; +include <./threads.scad>; + +/** + * THREADS + * TOP (large screw) + * metric_thread (diameter=13.6, pitch=1.5 ,thread_size = 1.6, length = 21); + * TOP VOID + * metric_thread (diameter=13.6 + .5, pitch=1.5, thread_size = 1.6, length = 21); + * + clone translated along Z by 0.2mm + * BOTTOM (small screw) + * metric_thread (diameter=10, pitch=1.5, thread_size = 1.6, length=LEN); + */ + +OD = 10 + .5; +PITCH = 1.5; +THREAD = 1.6; +LEN = 21; + +INSERT_D = 26; + +/** + * Core (center of the reel) + **/ +module gnal_spiral_core () { + $fn = 360; + + core_center_h = 4.2 + 3;; + + core_bottom_outer_d = 53; + core_bottom_outer_void_d = 44; + core_bottom_outer_h = 4.2; + + core_d = 29.5; + core_h = 8.5; + + core_bottom_d = 26; + core_bottom_h = 4.2; + + top_z_offset = (core_h / 2) - (core_center_h / 2); + + core_void_outer_d = 20.5; + core_void_inner_d = 14.5; + core_void_h = 11.5; + + arms_outer_d = 48; + arms_inner_d = 48 - 7; + + void_d = 18; + + film_void = 0.6; + + difference () { + union() { + //center + translate([0, 0, -core_center_h / 2]) { + cylinder(r = (core_bottom_outer_d - 1) / 2, h = core_center_h, center = true); + } + //top + translate([0, 0, top_z_offset]) { + cylinder(r = core_d / 2, h = core_h + core_center_h, center = true); + } + } + cylinder(r = void_d / 2, h = 30, center = true); + translate([0, 0, -7.2]) spiral_bottom_insert_void(); + } + + //arms + difference () { + union () { + translate([0, 0, top_z_offset]) difference() { + //adjusted arm (shorter) + intersection () { + cylinder(r = arms_outer_d / 2, h = core_h + core_center_h, center = true); + translate([1, 0, 0]) cylinder(r = arms_outer_d / 2, h = core_h + core_center_h, center = true); + } + intersection () { + cylinder(r = arms_inner_d / 2, h = core_h + core_center_h + 1, center = true); + translate([1, 0, 0]) cylinder(r = arms_inner_d / 2, h = core_h + core_center_h + 1, center = true); + } + translate([0, arms_outer_d / 2, 0]) cube([arms_outer_d, arms_outer_d, arms_outer_d], center = true); + } + //rounded arm end + translate([(arms_outer_d + arms_inner_d) / 4, 0, top_z_offset]) cylinder(r = 3.5 / 2, h = core_h + core_center_h, center = true, $fn = 40); + //adjusted arm + translate([-((arms_outer_d + arms_inner_d) / 4) + 1, 0, top_z_offset]) cylinder(r = 3.5 / 2, h = core_h + core_center_h, center = true, $fn = 40); + difference () { + rotate([0, 0, -120]) translate([13.75, 0, top_z_offset]) cube([16, 20, core_h + core_center_h], center = true); + //remove piece from adjusted arm + translate([-19, -14, 0]) rotate([0, 0, 10]) cube([4, 4, 30], center = true); + //remove piece from non-adjusted arm + rotate([0, 0, 45]) translate([-19, -14, 0]) rotate([0, 0, -10]) cube([4, 4, 30], center = true); + rotate([0, 0, -120 - 37]) translate([18, 0, top_z_offset]) { + cylinder(r = 6.8 / 2, h = 30, center = true); + translate([-4, -2, 0]) cube([4, 4, 30], center = true); + } + rotate([0, 0, -120 + 37]) translate([18, 0, top_z_offset]) { + cylinder(r = 6.8 / 2, h = 30, center = true); + translate([-4, 2, 0]) cube([4, 4, 30], center = true); + } + } + } + //film void (notches) + rotate([0, 0, -120]) { + translate([20, -5, 0]) { + rotate([0, 0, 45]) { + cube([20, film_void, 30], center = true); + } + } + } + rotate([0, 0, -120]) { + translate([20, 5, 0]) { + rotate([0, 0, -45]) { + cube([20, film_void, 30], center = true); + } + } + } + + //flatten piece + rotate([0, 0, -120]) translate([25, 0, 0]) difference () { + cylinder(r = 8 / 2, h = 30, center = true); + translate([-6.9, 0, 0]) cube([8, 8, 30], center = true); + } + cylinder(r = core_void_outer_d / 2, h = core_void_h, center = true); + rotate([0, 0, -120]) translate([20, 0, -1.5]) rotate([0, 0, 45]) cube([20, 20, 3.01], center = true); + cylinder(r = void_d / 2, h = 30, center = true); + translate([0, 0, -7.2]) spiral_bottom_insert_void(); + } +} + +module spiral_bottom_insert_void () { + intersection () { + rotate([0, 45, 0]) cube([3, INSERT_D + 2, 3], center = true); + cylinder(r = (INSERT_D + 1) / 2, h = 6, center = true); + } + intersection () { + rotate([0, 45, 90]) cube([3, INSERT_D + 2, 3], center = true); + cylinder(r = (INSERT_D + 1) / 2, h = 6, center = true); + } +} + +module spiral_bottom_insert_s8 () { + $fn = 160; + void_d = 18 - .3; + H = 17; + D2 = INSERT_D; + + translate([0, 0, 0]) difference () { + union () { + cylinder(r = void_d / 2, h = H, center = true); + //skirt + translate([0, 0, -(H - 1) / 2]) cylinder(r = D2 / 2, h = 1.5, center = true); + //notches + translate([0, 0, -((H - 2.5) / 2) - .1]) { + intersection () { + cylinder(r = D2 / 2, h = 6, center = true); + difference () { + rotate([0, 45, 0]) cube([3, D2 + 2, 3], center = true); + translate([0, 0, -1.5]) cube([6, D2 + 3, 3], center = true); + } + } + intersection () { + cylinder(r = D2 / 2, h = 6, center = true); + rotate([0, 0, 90]) difference () { + rotate([0, 45, 0]) cube([3, D2 + 2, 3], center = true); + translate([0, 0, -1.5]) cube([6, D2 + 3, 3], center = true); + } + } + } + } + translate([0, 0, -LEN / 2]) metric_thread (diameter=OD, pitch=PITCH, thread_size = THREAD, length=LEN); + } +} + +module spiral_bottom_insert_16 () { + $fn = 160; + + void_d = 18 - .3; + H = 17 + 8; + D2 = INSERT_D; + + RIDGES = 8; + RIDGE_D = 3; + + translate([0, 0, 0]) difference () { + union () { + cylinder(r = void_d / 2, h = H, center = true); + //skirt + translate([0, 0, -(H - 1) / 2]) cylinder(r = D2 / 2, h = 1.5, center = true); + //notches + translate([0, 0, -((H - 2.5) / 2) - .1]) { + intersection () { + cylinder(r = D2 / 2, h = 6, center = true); + difference () { + rotate([0, 45, 0]) cube([3, D2 + 2, 3], center = true); + translate([0, 0, -1.5]) cube([6, D2 + 3, 3], center = true); + } + } + intersection () { + cylinder(r = D2 / 2, h = 6, center = true); + rotate([0, 0, 90]) difference () { + rotate([0, 45, 0]) cube([3, D2 + 2, 3], center = true); + translate([0, 0, -1.5]) cube([6, D2 + 3, 3], center = true); + } + } + } + } + translate([0, 0, -(H / 2) - 2]) metric_thread (diameter=OD, pitch=PITCH, thread_size = THREAD, length=LEN + 8); + translate([0, 0, 8.5]) { + for (i = [0: RIDGES - 1]) { + rotate([0, 0, i * (360 / RIDGES)]) translate([void_d / 2, 0, 0]) cylinder(r = RIDGE_D / 2, h = 8.1, center = true); + } + } + } +} + +/** + * Spacers + **/ + +module spacer_ridges () { + ridges = 16; + for (i = [0 : ridges]) { + rotate([0, 0, i * (360 / ridges)]) translate([13.5, 0, 0]) cylinder(r = 1.25, h = 8, $fn = 60); + } +} + +module spacer_ridges_loose () { + ridges = 16; + intersection () { + union () { + for (i = [0 : ridges]) { + rotate([0, 0, i * (360 / ridges)]) translate([13.7, 0, 0]) cylinder(r = 1.25, h = 8, $fn = 60); + } + } + cylinder(r = 13.7, h = 12, center = true); + } +} +module spacer_outer_ridges () { + ridges = 24; + H = 6.5; + difference () { + union () { + for (i = [0 : ridges]) { + rotate([0, 0, i * (360 / ridges)]) translate([14.6, 0, -4.75]) cylinder(r = 1.25, h = 8, $fn = 30); + } + } + translate([0, 0, -4.1]) difference () { + cylinder(r = 33 / 2, h = 4, center = true, $fn = 100); + cylinder(r2 = 33 / 2, r1 = 27.75 / 2, h = 4.1, center = true, $fn = 100); + } + } +} +module spacer () { + add = 3.25; + core_d = 29.5; + core_bottom_d = 26.2 + .2; + void_d = 22.5; + h = 8 + add; + translate([0, 0, (add / 2) - 1]) difference () { + union () { + difference () { + cylinder(r = core_d / 2, h = h, center = true, $fn = 200); + translate([0, 0, 8]) cylinder(r = core_bottom_d / 2, h = h, center = true, $fn = 200); + cylinder(r = void_d / 2, h = h + 1, center = true, $fn = 200); + } + translate([0, 0, 0]) spacer_ridges_loose(); + spacer_outer_ridges(); + } + //trim top + translate([0, 0, h - 0.1]) cylinder(r = (core_d + 1) / 2, h = h, center = true, $fn = 200); + //trim bottom + translate([0, 0, -h + 0.9]) cylinder(r = (core_d + 1) / 2, h = h, center = true, $fn = 200); + //finger grips + //translate([0, 24, 0]) rotate([-6, 0, 0]) cylinder(r = 10, h = 6, center = true, $fn = 100); + //translate([0, -24, 0]) rotate([6, 0, 0]) cylinder(r = 10, h = 6, center = true, $fn = 100); + } +} + +module spacer_16 () { + core_d = 29.5; + core_bottom_d = 26.2 + .2; + void_d = 18; + h = 8; + + RIDGES = 8; + RIDGE_D = 3; + translate([0, 0, 0]) difference () { + union () { + difference () { + cylinder(r = core_d / 2, h = h, center = true, $fn = 200); + cylinder(r = void_d / 2, h = h + 1, center = true, $fn = 200); + } + translate([0, 0, -.75]) rotate([0, 180, 0]) spacer_outer_ridges(); + } + } + translate([0, 0, 0]) { + for (i = [0: RIDGES - 1]) { + rotate([0, 0, i * (360 / RIDGES)]) translate([void_d / 2, 0, 0]) cylinder(r = RIDGE_D / 2, h = 8, center = true); + } + } +} + +/** + * Spokes + **/ + +module triangle_void () { + length = (81 / 2) - 9; + width = 12; + height = 4.5 + 2.7; + ANGLE_A = 34.8; + ANGLE_B = 180 / SPOKE_COUNT; + difference () { + translate([-1, 0, 0]) cube([length, width, height], center = true); + translate([0, 10.3, 0]) rotate([0, 0, ANGLE_B]) cube([length * 2, width, height + 1], center = true); + translate([0, -10.3, 0]) rotate([0, 0, -ANGLE_B]) cube([length * 2, width, height + 1], center = true); + + translate([0, 10.3, -.7]) rotate([ANGLE_A, 0, 0]) cube([length *2, width, height * 10], center = true); + translate([0, -10.3, -.7]) rotate([-ANGLE_A, 0, 0]) cube([length *2, width, height * 10], center = true); + } +} + +module triangle_void_2 () { + length = 43 - 8; + width = 12; + height = 4.5 + 2.7; + ANGLE_A = 34.8; + ANGLE_B = 90 / SPOKE_COUNT; + angle_w = 10.2; + difference () { + translate([-1, 0, 0]) cube([length, width, height], center = true); + translate([0, angle_w, 0]) rotate([0, 0, ANGLE_B]) cube([length *2, width, height * 10], center = true); + translate([0, -angle_w, 0]) rotate([0, 0, -ANGLE_B]) cube([length *2, width, height * 10], center = true); + + translate([0, angle_w, -.7]) rotate([ANGLE_A, 0, 0]) cube([length *2, width, height * 10], center = true); + translate([0, -angle_w, -.7]) rotate([-ANGLE_A, 0, 0]) cube([length *2, width, height * 10], center = true); + } +} + +module triangle_void_3 () { + length = 32; + width = 10; + height = 4.5 + 2.7; + ANGLE_A = 31; + ANGLE_B = 45 / SPOKE_COUNT; + angle_w = 7.8; + difference () { + translate([-1, 0, 0]) cube([length, width, height], center = true); + translate([0, angle_w, 0]) rotate([0, 0, ANGLE_B]) cube([length *2, width, height * 10], center = true); + translate([0, -angle_w, 0]) rotate([0, 0, -ANGLE_B]) cube([length *2, width, height * 10], center = true); + + translate([0, angle_w, -.7]) rotate([ANGLE_A, 0, 0]) cube([length *2, width, height * 10], center = true); + translate([0, -angle_w, -.7]) rotate([-ANGLE_A, 0, 0]) cube([length *2, width, height * 10], center = true); + } +} + +/** + * Spiral Generation Modules + */ + + module spirals_old (count = 40, start_d = 48, spacing = 2) { + facet_size = 30; + bottom = 1.2; + top = .3; + top_offset = (bottom - top); + h = 2.2; + + od = start_d + (spacing * 2 * count); + echo("SPIRAL LENGTH", PI * count * (od + start_d + 1) / 2); + echo("OUTER D", od); + + facetProfile = [[0, 0], [top_offset, -h], [bottom, -h], [bottom, 0]]; + union () { + for (s = [0 : count - 1]) { + d = start_d + (s * spacing * 2); + c = PI * pow(d / 2, 2); + $fn = ceil( c / facet_size ); + angle_i = 360 / $fn; + increment = spacing / $fn; + spiralPath = [ for(t = [0 : $fn + 1]) [((d / 2) + (t * increment)) * cos(t * angle_i), ((d / 2) + (t * increment)) * sin(t * angle_i), 0] ]; + path_extrude(exShape=facetProfile, exPath=spiralPath); + } + } +} + + /** + * InwardSpiral code provided by Les Smith + * + * https://gist.github.com/sixteenmillimeter/839c16d39d26d04154f52b3f3ee6ee78 + **/ + +module ShapeToExtrude () { + bottom = -7.1; + w = 1.2; + top_w = .4; + top_offset = (w - top_w); + h = 2.2; + + // Build in +x space. The outside edge of this shape must follow the extrusion path, or there will be open seams.. + polygon ( points= [ + [w, bottom], + [0, bottom], + [0, 0], + [top_offset, h], + [w, h], + [w, 0] + ]); +} + +module InwardSpiral (StepSize, Steps, StartRadius, Pitch, ShapeX) { + for (i=[0 : Steps - 1]) { + // This could be made more computationally efficient + // by collapsing intermediate values and by doing only + // essential calculations inside the loop, but for now + // let's just leave it easy to read. + + ThisTheta = StepSize * i; + NextTheta = StepSize * (i + 1); + ThisRadius = StartRadius - i * (Pitch * (StepSize / 360)); + + // Spiral step approximated by arc of radius ThisRadius, + // passing through the start and end points calculated here. + + NextRadius = StartRadius - (i + 1) * (Pitch * (StepSize / 360)); + ThisX = ThisRadius * sin(ThisTheta); + ThisY = ThisRadius * cos(ThisTheta); + NextX = NextRadius * sin(NextTheta); + NextY = NextRadius * cos(NextTheta); + DeltaX = NextX - ThisX; + DeltaY = NextY - ThisY; + SlopeToNext = DeltaY / DeltaX; + BisecSlope = -1 / SlopeToNext; + ThisXYToBisector = sqrt(DeltaX * DeltaX + DeltaY * DeltaY) / 2; + BisectX = ThisX + (DeltaX / 2); + BisectY = ThisY + (DeltaY / 2); + BisectToCentre = sqrt(pow(ThisRadius, 2) - pow(ThisXYToBisector, 2)); + AbsXComponent = sqrt(pow(BisectToCentre, 2) / ( 1 + pow(BisecSlope, 2))); + XComponent = NextY < ThisY ? AbsXComponent: -AbsXComponent; + YComponent = XComponent * BisecSlope; + CentreX = BisectX - XComponent; + CentreY = BisectY - YComponent; + ExtrudeAngle = -2 * acos(BisectToCentre / ThisRadius); + ArcOrientation = NextY < ThisY ? atan(BisecSlope) - (ExtrudeAngle / 2) : -180 + atan(BisecSlope) -(ExtrudeAngle / 2); + translate([CentreX, CentreY, 0]) { + rotate ([0, 0, ArcOrientation]) { + rotate_extrude (angle=ExtrudeAngle, $fn=300) translate ([ThisRadius - ShapeX, 0, 0])ShapeToExtrude(); + } + } + } +}