5 main_dia = 71.2 + 0.50 - 2.26;
7 top_thick_by_oring = 3.0;
14 rivet_posn = 6.0 + 0.30;
16 rivet_width = 4.15 + 1.0;
17 rivet_tall = 5.51 + 1.49;
19 over_rivet_wall = 1.0;
21 inside_rivet_gap = 1.5;
25 bayo_interf_width = 2.0;
26 bayo_interf_slope = 0.5;
31 oring_upper_embed_angle = 80;
32 oring_compress = 0.1; // proportion
33 oring_compress_more = 0.2;
43 bayo_entry = bayo_behind/3;
45 bayo_slice_size = coarse ? 5 : 1;
47 brace_hole_width = 1.0;
48 brace_above_below = 1.2;
49 brace_end_shorter = 0.3;
57 strap_hoop_inside = 10;
58 strap_hoop_strlen = 10;
59 strap_hoop_elevation = 45;
61 sm_inner_circum = 218 - 1.90 - 1.00 - 0.50;
65 sm_bolt_dia = 3.5 + 0.1;
67 sm_bolt_head_dia = 6.94 + 1.0;
68 sm_bolt_head_thick = 2.14;
69 sm_bolt_nut_width = 5.89 + 0.25;
70 sm_bolt_nut_thick = 3.68;
71 sm_bolt_tighten_allow = 2.0;
73 sm_bolt_y_clear = 0.75;
83 catch_knob_above_gap = 8;
86 catch_stem_below_gap = 1.0;
87 catch_stem_beside_gap = 2.0;
89 catch_hook_slope = 0.15;
95 bayo_entry_x = bayo_entry;
96 bayo_entry_z = bayo_entry;
97 bayo_inramp_x = bayo_entry;
98 bayo_inramp_z = bayo_entry;
100 oring_mid_dia = oring_bore + oring_thick;
101 oring_outer_dia = oring_mid_dia + oring_thick;
103 oring_oblate = (1 - oring_compress);
105 oring_y_rad = oring_thick/2 * oring_oblate;
106 oring_x_rad = oring_thick/2 / oring_oblate;
108 by_oring_z = oring_y_rad * (1 + cos(oring_upper_embed_angle));
110 side_height = rivet_posn + bayo_behind + rivet_thick/2;
111 side_thick = rivet_tall + over_rivet_wall;
113 top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
115 middle_bot_z = top_z - top_thick_middle;
117 bayo_entry = bayo_behind / 3.0;
118 bayo_top_z = bayo_behind + bayo_gap;
120 rivet_entry_width = rivet_width + side_rivet_gap;
122 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
124 handling_dia = oring_bore + oring_thick*2 + min_wall*2;
127 sm_inner_rad = (sm_inner_circum + sm_bolt_tighten_allow/2) / TAU;
128 sm_outer_rad = sm_inner_rad + sm_main_thick;
130 smc_pos = [ 0, sm_inner_rad, 0 ];
132 smc_bolt_nut_dia = sm_bolt_nut_width / cos(30);
133 smc_bolt_nut_eff_thick = sm_bolt_nut_thick + sm_bolt_tighten_allow;
135 smc_bolt_y = sm_bolt_dia/2 + sm_bolt_y_clear;
136 smc_max_y = smc_bolt_y + sm_bolt_y_over
137 + max(sm_bolt_head_dia/2, smc_bolt_nut_dia/2);
138 smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr
139 + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
141 catch_cr = catch_knob_dia/2 + catch_stem_beside_gap;
142 catch_strap_width = sm_main_width;
143 catch_strap_thick = sm_main_thick;
144 catch_stem_end_h = catch_stem_h;
145 catch_pin_width = rivet_entry_width - catch_pin_gap;
147 cppy6 = -catch_strap_width/2;
148 cppxC = 0.34 * sm_inner_rad * TAU;
149 cppB = [ catch_pin_width/2,
151 + catch_stem_below_gap
153 + catch_knob_dia/2 ];
157 + catch_knob_above_gap ];
158 cpp12 = cpp0 + [1,0] * (catch_pin_height * catch_hook_slope);
159 cpp1 = cpp0 + [0,1] * catch_pin_height;
160 cpp2 = cpp1 + [1,0] * catch_pin_width;
161 cpp4 = cpp0 + [0,-1] * catch_stem_end_h;
162 cpp3 = [ cpp2[0], cpp4[1] ];
163 cpp5 = [ cpp0[0] - catch_stem_len,
165 cpp6 = [ cpp5[0], catch_cr ];
166 cpp7 = cppB + [1,-1] * catch_knob_dia/2
167 + [ catch_stem_beside_gap, -catch_stem_below_gap ]
168 + [ 0, -catch_pin_height ]
170 cpp11 = cpp7 + [1,0] * catch_cr;
171 cpp10 = [ cpp11[0], 0 - catch_cr ];
172 cpp8 = cpp10 + [1,0] * catch_cr;
173 cpp9 = cpp8 + [0,1] * catch_cr;
174 cppC = [ cppxC, cpp9[1] ];
175 cppA = [ -cppxC, 0 ];
176 cppD = cppC + [0,-1] * catch_strap_width;
177 cppE = [ cppA[0], cppD[1] ];
179 $fs= coarse ? 2.5 : 0.5;
182 include <poster-tube-lid-parametric.scad>
184 // bayonet definition
186 bayo_a = [ bayo_entry_x, 0 ];
187 bayo_p = [ 0, bayo_entry_z ];
188 bayo_n = [ 0, bayo_behind-bayo_inramp_z ];
189 bayo_m = [ bayo_inramp_x, bayo_behind ];
190 bayo_l = bayo_m + bayo_interf * [ 1/bayo_interf_slope, 1 ];
191 bayo_k = bayo_l + [ bayo_interf_width, 0 ];
192 bayo_j = bayo_k + bayo_interf * [ 1/bayo_interf_slope, -1 ];
193 bayo_i = bayo_j + [ rivet_width + inside_rivet_gap, 0 ];
194 bayo_h = [ bayo_i[0], bayo_behind + bayo_gap + bayo_interf ];
195 bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
197 bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
198 bayo_d = [-bayo_a[0], bayo_a[1]] - [rivet_entry_width,0];
199 bayo_c = bayo_d + [0,-5];
200 bayo_b = bayo_a + [0,-5];
202 bayo_f = [ bayo_e[0], bayo_g[1] + (bayo_e[0] - bayo_g[0]) ];
204 bayo_polygon = [ bayo_a,
222 module MainProfile(){
223 main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr;
226 translate(main_cnr_pos){
229 circle(r = main_cnr);
230 circle(r = main_cnr * 0.5);
235 polygon([[ -top_middle_dr, middle_bot_z ],
236 [ -top_middle_dr, top_z ],
237 [ main_cnr_pos[0], top_z ],
238 [ side_thick, main_cnr_pos[1] ],
239 [ side_thick, -side_height ],
240 [ side_taper, -side_height ],
243 [ -oring_x_rad, by_oring_z ],
247 translate([ oring_mid_dia/2 - main_dia/2, 0 ])
249 translate([ 0, oring_y_rad ])
250 scale([ 1/oring_oblate * (oring_compress_more+1) , oring_oblate ])
251 circle(oring_thick/2);
252 translate([ 0, oring_y_rad*2 - oring_thick/2 ])
253 circle(oring_thick/2);
258 module StrapHoopProfile(){
259 circle(r = strap_hoop_thick/2);
262 module StrapHoop(){ ////toplevel
263 bigrad = strap_hoop_inside/2 + strap_hoop_thick/2;
264 extralen = strap_hoop_thick * 5;
267 rotate([strap_hoop_elevation, 0,0]){
268 for (x= [ -1, +1 ] * bigrad) {
269 translate([x, -extralen, 0])
271 linear_extrude(height= extralen + strap_hoop_strlen + 0.1,
275 translate([0, strap_hoop_strlen, 0]){
277 rotate_extrude(convexity=10)
278 translate([bigrad, 0,0])
281 cube([100,100,100], center=true);
285 translate([0, 50, 0])
286 cube(100, center=true);
290 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
291 // nom_rad > real_rad
292 rotate([0,0, atan2(offset, nom_rad) ]){
294 translate([-offset, -10, 0])
296 linear_extrude(height= nom_rad*2)
298 translate([0,0, -25])
299 cylinder(h=50, r= real_rad);
300 translate([0,0, -25])
301 linear_extrude(height= 50)
303 [ -slice_size, -real_rad*2 ],
304 [ +slice_size, -real_rad*2 ] ]);
309 module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
310 offs = [ for (i=[ x_min :
312 x_max + slice_size ]) i ];
315 RotateProjectSlice(off, slice_size, nom_rad, real_rad)
319 module BayonetCutout(){
320 RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
321 main_dia/2 + side_thick,
322 main_dia/2 + rivet_tall)
323 translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0])
324 polygon(bayo_polygon, convexity=10);
327 module ProfilesDemo(){ ////toplevel
328 translate([-10,0]) MainProfile();
329 translate([+10, -side_height]) polygon(bayo_polygon, convexity=10);
332 module LimitForHandling(){ ////toplevel
333 hull() for (r=[0,180])
337 rotate([0,0, rs * handling_angle/2]) {
338 translate([rs * xd * main_dia/2 * tan(handling_angle/2),
339 main_dia/2 + side_thick - main_cnr,
342 cylinder(r= main_cnr, h=50);
349 hull() rotate_extrude(){
350 translate([ handling_dia/2 - main_cnr, top_z - main_cnr ]) {
351 circle(r = main_cnr);
352 mirror([0,1]) square([ main_cnr, 50 ]);
355 //cylinder(r= handling_dia/2, h=20);
358 module Cover(){ ////toplevel
359 render() difference(){
362 rotate_extrude(convexity=10)
363 translate([main_dia/2, 0])
365 translate([0,0, middle_bot_z])
366 cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
372 translate([0,0, -side_height])
374 rotate([0,0, r + asin((-oring_rm_beside) / (main_dia/2))])
376 oring_mid_dia/2 + oring_thick/4 * oring_rm_scale,
378 rotate([-oring_rm_angle, 0, 0])
380 cylinder(r = oring_thick/4 * oring_rm_scale, h=20);
382 for (r=[0 : 60 : 179]) {
384 height = top_thick_middle - brace_above_below*2;
385 translate([0,0, middle_bot_z + brace_above_below + height/2 ])
386 cube(center=true, [ oring_bore - brace_end_shorter,
387 brace_hole_width, height ]);
393 translate([-implheadcup_large_dia * .5 - implheadcup_thick/2,
394 -implheadcup_large_dia * .0,
397 // translate(strap_hoop_thick * [-0.5, 0, +1])
398 // translate([handling_dia/2, 0, -side_height])
399 // rotate([0,180,0]) rotate([0,0,90])
404 translate([0,0, -10])
405 cylinder(r= main_dia/2 - jig_rim, h=20);
408 module Jig(){ ////toplevel
411 translate([0,0, -side_height]){
412 cylinder(r= main_dia/2 + jig_thick, h= side_height + jig_thick);
414 translate([-jig_mark_rad, 0, jig_thick - jig_mark])
415 cube([jig_mark_rad*2, jig_mark, jig_mark]);
417 translate([0,0, -side_height-1])
418 cylinder(r= main_dia/2, h= side_height + 1);
420 translate([0,0, -rivet_posn])
422 translate([0,0, -100])
423 cylinder(r= jig_hole_dia/2, h = 200);
427 module CoverTest2(){ ////toplevel
434 module CoverTest1(){ ////toplevel
438 for (r= [ 40, 147 ]){
440 translate([0,0, -10]) {
441 cube([ main_dia*3, main_dia * .53, 18], center=true);
445 // translate([ 50, 0, 0 ])
447 // strap_hoop_inside + strap_hoop_thick*2 + 1,
454 module ImplHeadCupTest(){ ////toplevel
462 // children(0) is to add, (1) subtract
465 cylinder(r=sm_outer_rad, h=sm_main_width);
466 StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr,
472 cylinder(r=sm_inner_rad, h=sm_main_width+2);
476 cube([ sm_bolt_tighten_allow, 40,100 ], center=true);
481 module StrapMountBolt(l_delta){ ///toplevel
482 // positioned relative to smc_pos
483 translate([(smc_bolt_nut_eff_thick - sm_bolt_head_thick)/2,
486 translate([ -sm_bolt_shaft/2-1, 0,0 ]){
487 rotate([0,90,0]) cylinder(r= sm_bolt_dia/2, h= sm_bolt_shaft+2);
489 translate([ -sm_bolt_shaft/2, 0,0 ])
491 cylinder($fn=6, r=smc_bolt_nut_dia/2,
492 h=smc_bolt_nut_eff_thick + l_delta);
493 translate([ sm_bolt_shaft/2, 0,0 ])
495 cylinder(r=sm_bolt_head_dia/2, h=sm_bolt_head_thick + l_delta);
499 module StrapMountProtrusion(half_x, max_y, cnr){
501 linear_extrude(height=sm_main_width, convexity=10){
503 for (m = [0,1]) mirror([m,0,0]) {
504 translate([-(half_x - cnr), max_y - cnr])
506 translate([-half_x, -sm_inner_rad])
514 module StrapMount(){ ////toplevel
517 StrapMountProtrusion(strap_hoop_inside/2 + strap_hoop_thick,
521 [0,0, sm_main_width] +
522 strap_hoop_thick * [ 0, 0.5, -1.0 ])
529 module CatchCoreProfile(){ ////toplevel
531 translate(cppB) circle(r= catch_knob_dia/2);
561 translate(cpp7) circle(r= catch_cr);
567 translate(cpp6) circle(catch_cr);
575 module CatchPreDistort(){ /////toplevel
576 scale(100 / sm_inner_rad)
578 linear_extrude(height=catch_strap_thick, convexity=10)
582 module CatchAssembly(){ /////toplevel
583 rotate([0,0, -0.5 * (cpp1[0] + cpp2[0]) / sm_inner_rad * 360/TAU])
584 translate([0,0, catch_strap_width])
585 scale(sm_inner_rad / 100)
586 import(str("poster-tube-lid,CatchPostDistort-fa",
594 translate([-200, -200, -200])
595 cube([400, 200, 400]);