poster-tube-lid.scad

   1 // -*- C -*-
   2
   3 // Print, for each end:
   4 //
   5 //   CoverPrint
   6 //   StrapMount
   7 //   CatchAssembly
   8
   9 include <funcs.scad>
  10 include <utils.scad>
  11
  12 coarse = false;
  13 enable_head_cups = false;
  14
  15 main_dia = 71.2 + 0.50 - 2.26;
  16 top_thick_middle = 4;
  17 top_thick_by_oring = 3.0;
  18 top_middle_dr = 11;
  19
  20 main_cnr = 6.0;
  21
  22 min_wall = 3;
  23
  24 rivet_posn = 6.0 + 0.30;
  25 rivet_thick = 1.67;
  26 rivet_width = 4.15 + 1.0;
  27 rivet_tall = 5.51 + 1.49;
  28
  29 over_rivet_wall = 1.0;
  30 side_rivet_gap = 1.5;
  31 inside_rivet_gap = 1.5;
  32
  33 bayo_interf = 0.30;
  34 bayo_behind = 8.5;
  35 bayo_interf_width = 2.0;
  36 bayo_interf_slope = 0.5;
  37
  38 oring_thick = 5.0;
  39 oring_bore = 62.0;
  40
  41 oring_upper_embed_angle = 80;
  42 oring_compress = 0.1; // proportion
  43 oring_compress_more = 0.2;
  44
  45 oring_rm_beside = 8;
  46 oring_rm_scale = 2.0;
  47 oring_rm_angle = 20;
  48
  49 side_taper = 1.0;
  50
  51 bayo_gap = 6.0;
  52
  53 bayo_entry = 1.167;
  54 bayo_inramp = 0.9;
  55
  56 bayo_slice_size = coarse ? 5 : 1;
  57
  58 brace_hole_width = 1.0;
  59 brace_above_below = 1.2;
  60 brace_end_shorter = 0.3;
  61
  62 jig_thick = 1.4;
  63 jig_hole_dia = 3.0;
  64 jig_rim = 5;
  65 jig_mark = 5;
  66
  67 strap_loop_thick = 6;
  68 strap_loop_inside = 10;
  69 strap_loop_strlen = 10;
  70 strap_loop_elevation = 45;
  71
  72 sm_inner_circum = 218 - 1.90 - 1.00 - 0.50;
  73 sm_main_thick = 2.0;
  74 sm_main_width = 20;
  75
  76 sm_bolt_dia = 3.5 + 0.1;
  77 sm_bolt_shaft = 21.0;
  78 sm_bolt_head_dia = 6.94 + 1.0;
  79 sm_bolt_head_thick = 2.14;
  80 sm_bolt_nut_width = 5.89 + 0.25;
  81 sm_bolt_nut_thick = 3.68;
  82 sm_bolt_tighten_allow = 2.0;
  83
  84 sm_bolt_y_clear = 0.75;
  85 sm_bolt_y_over = 0.5;
  86
  87 sm_closure_cnr = 3.0;
  88
  89 wm_thick = 5;
  90 wm_screw_dia = 4.5; // XXX
  91 wm_screwdriver_dia = 6.0; // XXX
  92 wm_screw_around = 4.0; // XXX
  93 wm_screw_slot = 3.5;
  94 wm_screw_head = 7.5; // XXX
  95
  96 wmb_screw_dia = 5;
  97 wmb_screw_around_x = 4; // XXX
  98 wmb_screw_around_y = 6; // XXX
  99 wmb_screw_depth = 10; // XXX
 100 wmb_nut_across = 8; // XXX
 101 wmb_nut_around_min = 2; // XXX
 102 wmb_nut_th = 4; // XXX
 103 wmb_gap = 1.0;
 104
 105 catch_stalk_h = 4.5;
 106 catch_stalk_len = 50;
 107 catch_tip_th = 4;
 108 catch_head_th = 3;
 109
 110 catch_pin_slop = 0.25; // each side, and above
 111 catch_pin_slop_x_extra = 0.0; // only on one side
 112 catch_stalk_above_gap = 1.5;
 113 catch_stalk_eff_bend_rad = catch_stalk_len * 0.75;
 114
 115 catch_strap_width = 12;
 116 catch_stalk_base_width = 15;
 117
 118 catch_knob_dia = 6;
 119 catch_knob_above_gap = 5;
 120 catch_knob_height = 3.0;
 121
 122 catch_stalk_below_gap = 1.0;
 123 catch_stalk_beside_gap = 2.0;
 124
 125 // calculated
 126
 127 TAU = PI*2;
 128
 129 bayo_entry_x = bayo_entry;
 130 bayo_entry_z = bayo_entry;
 131 bayo_inramp_x = bayo_inramp;
 132 bayo_inramp_z = bayo_inramp;
 133
 134 oring_mid_dia = oring_bore + oring_thick;
 135 oring_outer_dia = oring_mid_dia + oring_thick;
 136
 137 oring_oblate = (1 - oring_compress);
 138
 139 oring_y_rad = oring_thick/2 * oring_oblate;
 140 oring_x_rad = oring_thick/2 / oring_oblate;
 141
 142 by_oring_z = oring_y_rad * (1 + cos(oring_upper_embed_angle));
 143
 144 side_height = rivet_posn + bayo_behind + rivet_thick/2;
 145 side_thick = rivet_tall + over_rivet_wall;
 146
 147 top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
 148
 149 middle_bot_z = top_z - top_thick_middle;
 150
 151 bayo_top_z = bayo_behind + bayo_gap;
 152
 153 bayo_nom_rad = main_dia/2 + side_thick;
 154 bayo_real_rad = main_dia/2 + rivet_tall;
 155
 156 rivet_entry_width = rivet_width + side_rivet_gap;
 157
 158 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
 159
 160 handling_dia = oring_bore + oring_thick*2 + min_wall*2;
 161 handling_angle = 45;
 162
 163 sm_inner_rad = (sm_inner_circum + sm_bolt_tighten_allow/2) / TAU;
 164 sm_outer_rad = sm_inner_rad + sm_main_thick;
 165
 166 wm_main_width = sm_main_width;
 167 wm_y_min = sqrt( pow(sm_inner_rad, 2) -
 168                  pow(sm_inner_rad - (wm_thick - sm_main_thick), 2) );
 169 wm_y_screw = wm_y_min + wm_screw_around + wm_screw_dia/2;
 170 wm_y_max = wm_y_screw + wm_screw_dia/2 + wm_screw_around;
 171 wm_y_slotc_screw = wm_y_screw + wm_screw_slot/2;
 172 wm_y_slot1_screw = wm_y_screw + wm_screw_slot;
 173 wm_y_slot1_max = wm_y_max + wm_screw_slot;
 174 wm_z_slot0_screw = wm_main_width + wm_screwdriver_dia/2;
 175 wm_z_slotc_screw = wm_z_slot0_screw + wm_screw_slot/2;
 176 wm_z_slot1_screw = wm_z_slot0_screw + wm_screw_slot;
 177 wm_z_max = wm_z_slot1_screw + wm_screw_around;
 178
 179 wmb_mount_cut_rad = sm_outer_rad + wmb_gap;
 180 wmb_x_screw = -sm_outer_rad + max(
 181                                   wmb_screw_around_x + wmb_screw_dia/2,
 182                                   wmb_nut_around_min + wmb_nut_across/2
 183                                   );
 184 function wmb_screw_thing_y_min(dia) = sqrt(
 185                        pow(wmb_mount_cut_rad, 2) -
 186                        pow(wmb_x_screw + dia/2, 2)
 187                        );
 188 wmb_y_screw_end = wmb_screw_thing_y_min(wmb_screw_dia);
 189 wmb_y_nut_min = wmb_screw_thing_y_min(wmb_nut_across + wmb_nut_around_min*2);
 190 wmb_z_screw = 10; // XXX
 191
 192 smc_pos = [ 0, sm_inner_rad, 0 ];
 193
 194 smc_bolt_nut_dia = sm_bolt_nut_width / cos(30);
 195 smc_bolt_nut_eff_thick = sm_bolt_nut_thick + sm_bolt_tighten_allow;
 196
 197 smc_bolt_y = sm_bolt_dia/2 + sm_bolt_y_clear;
 198 smc_max_y = smc_bolt_y + sm_bolt_y_over
 199   + max(sm_bolt_head_dia/2, smc_bolt_nut_dia/2);
 200 smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr
 201   + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
 202
 203 catch_cr = catch_knob_dia/2 + catch_stalk_beside_gap;
 204 catch_strap_thick = sm_main_thick;
 205
 206 echo("R ", sm_inner_rad, bayo_real_rad, bayo_nom_rad);
 207
 208 $fs= coarse ? 2.5 : 0.5;
 209 $fa= coarse ? 5 : 1;
 210
 211 include <poster-tube-lid-parametric.scad>
 212
 213 // bayonet definition
 214
 215 bayo_a = [ bayo_entry_x, 0 ];
 216 bayo_p = [ 0, bayo_entry_z ];
 217 bayo_n = [ 0, bayo_behind-bayo_inramp_z ];
 218 bayo_m = [ bayo_inramp_x, bayo_behind ];
 219 bayo_l = bayo_m + bayo_interf * [ 1/bayo_interf_slope,  1 ];
 220 bayo_k = bayo_l + [ bayo_interf_width, 0 ];
 221 bayo_j = bayo_k + bayo_interf * [ 1/bayo_interf_slope, -1 ];
 222 bayo_i = bayo_j + [ rivet_width + inside_rivet_gap, 0 ];
 223 bayo_h = [ bayo_i[0], bayo_behind + bayo_gap + bayo_interf ];
 224 bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
 225
 226 bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
 227 bayo_d = [-bayo_a[0], bayo_a[1]] - [rivet_entry_width,0];
 228 bayo_c = bayo_d + [0,-5];
 229 bayo_b = bayo_a + [0,-5];
 230
 231 bayo_f = [ bayo_e[0], bayo_g[1] + (bayo_e[0] - bayo_g[0]) ];
 232
 233 bayo_polygon = [ bayo_a,
 234                  bayo_b,
 235                  bayo_c,
 236                  bayo_d,
 237                  bayo_e,
 238                  bayo_f,
 239                  bayo_g,
 240                  bayo_h,
 241                  bayo_i,
 242                  bayo_j,
 243                  bayo_k,
 244                  bayo_l,
 245                  bayo_m,
 246                  bayo_n,
 247                  bayo_p ];
 248
 249 echo(bayo_polygon);
 250
 251 // CATCH
 252
 253 cppxC = 0.41 * sm_inner_rad * TAU;
 254
 255 // catch pin
 256
 257 cpp_adj = (bayo_n[0] - bayo_f[0]) * (1 - sm_inner_rad / bayo_nom_rad);
 258 // radius scaling due to nom and actual radius difference in
 259 // bayo entry construction
 260
 261 cppa = bayo_f + [1,-1] * catch_pin_slop + [1,0] * cpp_adj;
 262 cppb = bayo_g + [1,-1] * catch_pin_slop + [1,0] * cpp_adj;
 263 cppd = [ bayo_n[0]
 264          - catch_pin_slop - catch_pin_slop_x_extra,
 265          -catch_stalk_above_gap ];
 266 cppi = [ cppa[0], cppd[1] ];
 267 cppc = [ cppd[0], cppb[1] ];
 268 cpph = cppd + [0,-1] * catch_stalk_h;
 269 cppe = cppd + [0,-1] * (catch_knob_above_gap + catch_knob_dia/2);
 270 cppf = [ cppa[0], cppe[1] ];
 271 cppg = [ cppa[0], cpph[1] ];
 272 cppB = 0.5 * (cppf + cppe);
 273
 274 echo("RR", sm_inner_rad / bayo_nom_rad);
 275
 276 // catch assembly depression below pin
 277
 278 cppy6 = cppB[1] - (catch_knob_dia/2
 279                    + (cppc[1] - cppd[1])
 280                    + catch_stalk_below_gap);
 281 cpp7 = [ cppB[0], cppy6 + catch_cr ];
 282 cpp11 = cpp7 + [1,0] * catch_cr;
 283 cppy9 = cppy6 + catch_strap_width * 1/3;
 284 cpp9 = [ cpp7[0] + catch_cr * 2, cppy9 ];
 285 cpp8 = cpp9 + [0,-1] * catch_cr;
 286 cpp10 = cpp8 + [-1,0] * catch_cr;
 287 cppC = [ cppxC, cpp9[1] ];
 288 cppD = cppC + [0,-1] * catch_strap_width;
 289
 290 // catch assembly stalk and so on
 291
 292 catch_cr3 = catch_cr + catch_stalk_h;
 293
 294 cppF = [ cppg[0] - catch_stalk_eff_bend_rad, cppd[1] ];
 295 cpp4 = [ cppg[0] - catch_stalk_len, cpph[1] ] + [1,-1] * catch_cr;
 296 cpp5 = [ cpp4[0], cppC[1] + catch_cr ];
 297 cpp2 = cpp5 + [-1,0] * (catch_cr * 2 + catch_stalk_base_width);
 298 cpp2r = cpp2 + [1,0] * catch_cr;
 299 cpp2d = cpp2 + [0,-1] * catch_cr;
 300 cpp3 = [ cpp2[0] + catch_cr + catch_cr3, cppd[1] - catch_cr3 ];
 301 cppA = [ -cppxC, cpp9[1] ];
 302 cppE = [ cppA[0], cppD[1] ];
 303
 304 catch_assembly_dy = -cppy9 + catch_strap_width;
 305
 306
 307 module MainProfile(){
 308   main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr;
 309   difference(){
 310     union(){
 311       translate(main_cnr_pos){
 312         intersection(){
 313           difference(){
 314             circle(r = main_cnr);
 315             circle(r = main_cnr * 0.5);
 316           }
 317           square([10,10]);
 318         }
 319       }
 320       polygon([[ -top_middle_dr,        middle_bot_z      ],
 321                [ -top_middle_dr,        top_z             ],
 322                [ main_cnr_pos[0],       top_z             ],
 323                [ side_thick,            main_cnr_pos[1]   ],
 324                [ side_thick,            -side_height      ],
 325                [ side_taper,            -side_height      ],
 326                [ 0,                     -rivet_posn       ],
 327                [ 0,                     by_oring_z        ],
 328                [ -oring_x_rad,          by_oring_z        ],
 329                ],
 330               convexity=10);
 331     }
 332     translate([ oring_mid_dia/2 - main_dia/2, 0 ])
 333       hull(){
 334       translate([ 0, oring_y_rad ])
 335         scale([ 1/oring_oblate * (oring_compress_more+1) , oring_oblate ])
 336         circle(oring_thick/2);
 337       translate([ 0, oring_y_rad*2 - oring_thick/2 ])
 338         circle(oring_thick/2);
 339     }
 340   }
 341 }
 342
 343 module StrapLoopProfile(){
 344   circle(r = strap_loop_thick/2);
 345 }
 346
 347 module StrapLoop(){ ////toplevel
 348   bigrad = strap_loop_inside/2 + strap_loop_thick/2;
 349   extralen = strap_loop_thick * 5;
 350
 351   intersection(){
 352     rotate([strap_loop_elevation, 0,0]){
 353       for (x= [ -1, +1 ] * bigrad) {
 354         translate([x, -extralen, 0])
 355           rotate([-90,0,0])
 356           linear_extrude(height= extralen + strap_loop_strlen + 0.1,
 357                          convexity=10)
 358           StrapLoopProfile();
 359       }
 360       translate([0, strap_loop_strlen, 0]){
 361         intersection(){
 362           rotate_extrude(convexity=10)
 363             translate([bigrad, 0,0])
 364             StrapLoopProfile();
 365           translate([0,50,0])
 366             cube([100,100,100], center=true);
 367         }
 368       }
 369     }
 370     translate([0, 50, 0])
 371       cube(100, center=true);
 372   }
 373 }
 374
 375 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
 376   // nom_rad > real_rad
 377   rotate([0,0, atan2(offset, nom_rad) ]){
 378     intersection(){
 379       translate([-offset, -10, 0])
 380         rotate([90,0,0])
 381         linear_extrude(height= nom_rad*2, convexity=50)
 382         children(0);
 383       translate([0,0, -25])
 384         cylinder(h=50, r= real_rad);
 385       translate([0,0, -25])
 386         linear_extrude(height= 50, convexity=50)
 387         polygon([ [ 0,0 ],
 388                   [ -slice_size, -real_rad*2 ],
 389                   [ +slice_size, -real_rad*2 ] ]);
 390     }
 391   }
 392 }
 393
 394 module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
 395   offs = [ for (i=[ x_min :
 396                     slice_size :
 397                     x_max + slice_size ]) i ];
 398   echo (offs);
 399   for (off=offs)
 400     RotateProjectSlice(off, slice_size, nom_rad, real_rad)
 401     children(0);
 402 }
 403
 404 module BayonetCutout(){
 405   RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
 406                 bayo_nom_rad,
 407                 bayo_real_rad)
 408     translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0])
 409     polygon(bayo_polygon, convexity=10);
 410 }
 411
 412 module ProfilesDemo(){ ////toplevel
 413   translate([-10,0]) MainProfile();
 414   translate([+10, -side_height]) polygon(bayo_polygon, convexity=10);
 415 }
 416
 417 module LimitForHandling(){ ////toplevel
 418   hull() for (r=[0,180])
 419     rotate([0,0,r]) {
 420       for (rs=[-1,+1]) {
 421         for (xd=[0,1]) {
 422           rotate([0,0, rs * handling_angle/2]) {
 423             translate([rs * xd * main_dia/2 * tan(handling_angle/2),
 424                        main_dia/2 + side_thick - main_cnr,
 425                        top_z - main_cnr]) {
 426               mirror([0,0,1])
 427                 cylinder(r= main_cnr, h=50);
 428               sphere(main_cnr);
 429             }
 430           }
 431         }
 432       }
 433     }
 434   hull() rotate_extrude(convexity=10){
 435     translate([ handling_dia/2 - main_cnr, top_z - main_cnr ]) {
 436       circle(r = main_cnr);
 437       mirror([0,1]) square([ main_cnr, 50 ]);
 438     }
 439   }
 440   //cylinder(r= handling_dia/2, h=20);
 441 }
 442
 443 module Cover(){ ////toplevel
 444   render() difference(){
 445     intersection(){
 446       union(){
 447         rotate_extrude(convexity=10)
 448           translate([main_dia/2, 0])
 449           MainProfile();
 450         translate([0,0, middle_bot_z])
 451           cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
 452       }
 453       LimitForHandling();
 454     }
 455     for (r=[0,180]){
 456       rotate([0,0, r])
 457         translate([0,0, -side_height])
 458         BayonetCutout();
 459       rotate([0,0, r + asin((-oring_rm_beside) / (main_dia/2))])
 460         translate([0,
 461                    oring_mid_dia/2 + oring_thick/4 * oring_rm_scale,
 462                    oring_y_rad * 1.5])
 463         rotate([-oring_rm_angle, 0, 0])
 464         mirror([0,0,1])
 465         cylinder(r = oring_thick/4 * oring_rm_scale, h=20);
 466     }
 467     for (r=[0 : 60 : 179]) {
 468       rotate([0,0, r]) {
 469         height = top_thick_middle - brace_above_below*2;
 470         translate([0,0, middle_bot_z + brace_above_below + height/2 ])
 471         cube(center=true, [ oring_bore - brace_end_shorter,
 472                             brace_hole_width, height ]);
 473       }
 474     }
 475   }
 476   if (enable_head_cups)
 477     for (r=[0,180])
 478       rotate([0,0,r])
 479         translate([-implheadcup_large_dia * .5 - implheadcup_thick/2,
 480                    -implheadcup_large_dia * .0,
 481                    middle_bot_z + 0.1])
 482         ImplHeadCup();
 483
 484 //  translate(strap_loop_thick * [-0.5, 0, +1])
 485 //    translate([handling_dia/2, 0, -side_height])
 486 //    rotate([0,180,0]) rotate([0,0,90])
 487 //    StrapLoop();
 488 }
 489
 490 module SavingHole(){
 491   translate([0,0, -10])
 492     cylinder(r= main_dia/2 - jig_rim, h=20);
 493 }
 494
 495 module Jig(){ ////toplevel
 496   difference(){
 497     union(){
 498       translate([0,0, -side_height]){
 499         cylinder(r= main_dia/2 + jig_thick, h= side_height + jig_thick);
 500       }
 501       translate([-jig_mark_rad, 0, jig_thick - jig_mark])
 502         cube([jig_mark_rad*2, jig_mark, jig_mark]);
 503     }
 504     translate([0,0, -side_height-1])
 505       cylinder(r= main_dia/2, h= side_height + 1);
 506     SavingHole();
 507     translate([0,0, -rivet_posn])
 508       rotate([90, 0,0])
 509       translate([0,0, -100])
 510       cylinder(r= jig_hole_dia/2, h = 200);
 511   }
 512 }
 513
 514 module CoverPrint(){ ////toplevel
 515   rotate([0,180,0]) Cover();
 516 }
 517
 518 module CoverTest2(){ ////toplevel
 519   difference(){
 520     Cover();
 521     SavingHole();
 522   }
 523 }
 524
 525 module CoverTest1(){ ////toplevel
 526   difference(){
 527     CoverTest2();
 528     difference(){
 529       for (r= [ 40, 147 ]){
 530         rotate([0,0, r]){
 531           translate([0,0, -10]) {
 532             cube([ main_dia*3, main_dia * .53, 18], center=true);
 533           }
 534         }
 535       }
 536 //      translate([ 50, 0, 0 ])
 537 //      cube([ 100,
 538 //             strap_loop_inside + strap_loop_thick*2 + 1,
 539 //             100 ],
 540 //           center=true);
 541     }
 542   }
 543 }
 544
 545 module ImplHeadCupTest(){ ////toplevel
 546   for (r=[0,180])
 547     rotate([0,0,r])
 548       translate([-17,0,0])
 549       ImplHeadCup();
 550 }
 551
 552 module SomeStrap(width, cut_width=0){
 553   // children(0) is to add, (1) subtract
 554   difference(){
 555     union(){
 556       cylinder(r=sm_outer_rad, h=width);
 557       StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr,
 558                            smc_max_y,
 559                            sm_closure_cnr,
 560                            width);
 561       children(0);
 562     }
 563     translate([0,0,-1])
 564       cylinder(r=sm_inner_rad, h=max(width+2, cut_width));
 565     translate(smc_pos)
 566       StrapMountBolt(10, width);
 567     translate(smc_pos)
 568       cube([ sm_bolt_tighten_allow, 40,100 ], center=true);
 569     children(1);
 570   }
 571 }
 572
 573 module StrapMountBolt(l_delta, strap_width){ ///toplevel
 574   // positioned relative to smc_pos
 575   translate([(smc_bolt_nut_eff_thick - sm_bolt_head_thick)/2,
 576              smc_bolt_y,
 577              strap_width/2]){
 578     translate([ -sm_bolt_shaft/2-1, 0,0 ]){
 579       rotate([0,90,0]) cylinder(r= sm_bolt_dia/2, h= sm_bolt_shaft+2);
 580     }
 581     translate([ -sm_bolt_shaft/2, 0,0 ])
 582       rotate([0,-90,0])
 583       cylinder($fn=6, r=smc_bolt_nut_dia/2,
 584                h=smc_bolt_nut_eff_thick + l_delta);
 585     translate([ sm_bolt_shaft/2, 0,0 ])
 586       rotate([0,90,0])
 587       cylinder(r=sm_bolt_head_dia/2, h=sm_bolt_head_thick + l_delta);
 588   }
 589 }
 590
 591 module StrapMountProtrusion(half_x, max_y, cnr, width){
 592   translate(smc_pos){
 593     linear_extrude(height=width, convexity=10){
 594       hull(){
 595         for (m = [0,1]) mirror([m,0,0]) {
 596           translate([-(half_x - cnr), max_y - cnr])
 597             circle(r=cnr);
 598           translate([-half_x, -sm_inner_rad])
 599             square([1,1]);
 600         }
 601       }
 602     }
 603   }
 604 }
 605
 606 module StrapMount(){ ////toplevel
 607   SomeStrap(sm_main_width){
 608     rotate([0,0,180]){
 609       StrapMountProtrusion(strap_loop_inside/2 + strap_loop_thick,
 610                            strap_loop_thick,
 611                            sm_closure_cnr,
 612                            sm_main_width);
 613       translate(smc_pos +
 614                 [0,0, sm_main_width] +
 615                 strap_loop_thick * [ 0, 0.5, -1.0 ])
 616         StrapLoop();
 617     }
 618     union(){ };
 619   }
 620 }
 621
 622 module WallScrewHoleSlot(){ ////toplevel
 623   ds = [-1,+1] * wm_screw_slot/2;
 624   linextr_x_yz(-(wm_thick + 1), 1) {
 625     hull(){
 626       for (d = ds)
 627         translate([d, 0])
 628           circle(r = wm_screw_dia/2);
 629     }
 630   }
 631   hull(){
 632     for (d = ds){
 633       translate([0, d, 0]){
 634         linextr_x_yz(0, 1)
 635           circle(r = wm_screw_head/2);
 636         linextr_x_yz(-(wm_screw_head - wm_screw_dia)/2, 0)
 637           circle(r = wm_screw_dia/2);
 638       }
 639     }
 640   }
 641 }
 642
 643 module WallMountMounts(){
 644   linextr(0, wm_z_max){
 645     translate([ -sm_outer_rad, 0 ])
 646       rectfromto([ 0, -wm_y_max ],
 647                  [ wm_thick, wm_y_slot1_max ]);
 648   }
 649 }
 650 module WallMountScrewHoles(){
 651   translate([ -sm_outer_rad + wm_thick, 0, wm_z_slotc_screw]) {
 652     translate([ 0, wm_y_slotc_screw, 0 ])
 653       WallScrewHoleSlot();
 654     translate([ 0, -wm_y_slotc_screw, 0 ])
 655       rotate([90,0,0])
 656       WallScrewHoleSlot();
 657   }
 658 }
 659
 660 module WallMount(){ ////toplevel
 661   SomeStrap(sm_main_width, wm_z_max + 2){
 662     WallMountMounts();
 663     WallMountScrewHoles();
 664   }
 665 }
 666
 667 module WallMountBaseMounts(){
 668 }
 669
 670 // screws, nuts, slots for nuts to go down into
 671 module WallMountBaseScrewsEtc(){
 672   for (my=[0,1]) {
 673     mirror([0, my, 0]) {
 674       translate([wmb_x_screw, 0, wmb_z_screw]) {
 675         linextr_y_xz(wmb_y_screw_end,
 676                      wmb_y_screw_end + wmb_screw_depth)
 677           circle(r = wmb_screw_dia/2);
 678         linextr_y_xz(wmb_y_nut_min,
 679                      wmb_y_nut_min + wmb_nut_th){
 680           hull(){
 681             rotate(30)
 682               circle(r = wmb_nut_across / cos(30) * 0.5, $fn = 6);
 683             translate([0, 100]) // XXX change 100
 684               square(wmb_nut_across, center=true);
 685           }
 686         }
 687       }
 688     }
 689   }
 690 }
 691 /*
 692
 693
 694       linextr(wmb_y_screw_end
 695       linextr(0, 20) {
 696         difference(){
 697           translate([ wmb_x_screw, wmb_y_screw_end ])
 698             rectfromto([ -wmb_screw_dia/2, 0 ],
 699                        [ +wmb_screw_dia/2, wmb_screw_depth ]);
 700         }
 701       }
 702     }
 703   }
 704 }*/
 705 //        circle(r = wmb_mount_cut_rad);
 706
 707 module WallMountForBase(){ ////toplevel
 708   SomeStrap(sm_main_width, wm_z_max + 2){
 709     union(){
 710       WallMountMounts();
 711     }
 712     union(){
 713       WallMountScrewHoles();
 714       %WallMountBaseScrewsEtc();
 715     }
 716   }
 717 }
 718
 719 module CatchAssemblyCoreProfile(){
 720   difference(){
 721     union(){
 722       hull(){
 723         translate(cpp3) circle(r= catch_cr3);
 724         polygon([ cpp3,
 725                   cpp2r,
 726                   cpp5,
 727                   cpph,
 728                   cppd
 729                   ]);
 730       }
 731       polygon([cppD,
 732                cppC,
 733                cpp9,
 734                cpp10,
 735                cpp11,
 736                cpp4,
 737                cpp2r,
 738                cpp2d,
 739                cppA,
 740                cppE
 741                ]);
 742       translate(cpp8) circle(r= catch_cr);
 743     }
 744     hull(){
 745       translate(cpp4) circle(r= catch_cr);
 746       translate(cpp5) circle(r= catch_cr);
 747       translate(cpp7) circle(r= catch_cr);
 748       polygon([cpp4,
 749                cppg,
 750                cpph,
 751                cpp10,
 752                cpp11,
 753                ]);
 754     }
 755     translate(cpp2) circle(r= catch_cr);
 756   }
 757   // if cpp11 is above cpp10, the subtracted hull above
 758   // can go down too far.  Ensure we do not cut off below cppy6.
 759   polygon([ cppE,
 760             cppD,
 761             cpp9,
 762             [ cpp9[0],            cppy6 ],
 763             [ cpp7[0] - catch_cr, cppy6 ],
 764             cpp2d
 765             ]);
 766 }
 767
 768 module CatchTipProfile(dy){
 769   ddy = [0,dy];
 770   intersection(){
 771     translate(cppF){
 772       difference(){
 773 //      circle(r = dist2d(cppF, cppd));
 774         //circle(r = dist2d(cppF, cppa));
 775       }
 776     }
 777     polygon([ cppa,
 778               cppi + ddy,
 779               cppd + ddy,
 780               cppc,
 781               cppb ]);
 782   }
 783 }
 784
 785 module CatchHeadProfile(){
 786   polygon([ cppd,
 787             cppd,
 788             cppi,
 789             cppf,
 790             cppe,
 791             cpph ]);
 792 }
 793
 794
 795 module CatchCore(){ /////toplevel
 796   linear_extrude(height=catch_strap_thick, convexity=10)
 797     CatchAssemblyCoreProfile();
 798
 799   hull(){
 800     linear_extrude(height=catch_head_th, convexity=10)
 801       CatchTipProfile(0);
 802     linear_extrude(height=catch_tip_th, convexity=10)
 803       CatchTipProfile(catch_tip_th - catch_head_th);
 804   }
 805
 806   linear_extrude(height=catch_head_th, convexity=10)
 807     CatchHeadProfile();
 808
 809   translate(concat(cppB,[0])) hull(){
 810     translate([0,0, catch_knob_height + catch_head_th - catch_knob_dia/2])
 811       sphere(r = catch_knob_dia/2);
 812     cylinder(r = catch_knob_dia/2, h = 0.1);
 813   }
 814 }
 815
 816 module CatchPreDistort(){ /////toplevel
 817   scale(100 / sm_inner_rad)
 818     rotate([90,0,0])
 819     CatchCore();
 820 }
 821
 822 module CatchAssembly(){ /////toplevel
 823   rotate([0,0, -(cppe[0] + cppB[0] + catch_pin_slop) / sm_inner_rad * 360/TAU])
 824     translate([0,0, catch_assembly_dy])
 825     scale(sm_inner_rad / 100)
 826     import(str("poster-tube-lid,CatchPostDistort-fa",
 827                (coarse ? 20 : 3),
 828                ".stl"),
 829            convexity=20);
 830
 831   SomeStrap(catch_strap_width){
 832     union(){ }
 833     union(){
 834       translate([-200, -200, -200])
 835         cube([400, 200, 400]);
 836     }
 837   }
 838 }
 839
 840 module CatchDemo(){ /////toplevel
 841   color("blue") translate([0,0,
 842                            -catch_assembly_dy
 843              ])
 844     CatchAssembly();
 845   translate([0,0,+side_height
 846              ])
 847     Cover();
 848 }
 849
 850 module CatchDemoS(){ /////toplevel
 851   color("blue") translate([0,0,
 852              -catch_assembly_dy
 853              ])
 854     CatchAssembly();
 855   intersection(){
 856     translate([0,0,+side_height
 857                ])
 858       Cover();
 859     mirror([0,1,0]) translate([-250,33,0]) cube([500,500,500]);
 860   }
 861   color("black")
 862     translate([0,-33,0])
 863     cube([6.15, 2,2], center=true);
 864 }
 865
 866 module CatchPinProfileDemo(){ /////toplevel
 867   translate([0, 0 * -bayo_behind,0]) {
 868     echo("G ",
 869          bayo_n[0] - bayo_e[0]);
 870     color("blue") translate([0,0,
 871                              +1,
 872                ]) {
 873       CatchAssemblyCoreProfile();
 874       CatchHeadProfile();
 875     }
 876     translate([0,0,10])
 877       color("red")
 878       CatchTipProfile(0);
 879
 880     polygon(bayo_polygon, convexity=10);
 881
 882     // adhoc show a position
 883     color("purple")
 884     translate(concat(
 885                      cppa,
 886                      10
 887                      )) difference(){ circle(2.5); circle(2.0); }
 888
 889  }
 890 }
 891
 892 //ProfilesDemo();
 893 //BayonetCutout();
 894 //MainProfile();
 895 //Cover();
 896 //Jig();
 897 //CoverTest();