filamentspool.scad

   1 // -*- C -*-
   2
   3 // filamentspool.scad
   4 // 3D design for filament spools to hold coils as supplied by Faberdashery
   5 //
   6
   7 //
   8 // Copyright 2012,2013,2016 Ian Jackson
   9 //
  10 // This work is free software: you can redistribute it and/or modify
  11 // it under the terms of the GNU General Public License as published by
  12 // the Free Software Foundation, either version 3 of the License, or
  13 // (at your option) any later version.
  14 //
  15 // This work is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19 //
  20 // You should have received a copy of the GNU General Public License
  21 // along with this work.  If not, see <http://www.gnu.org/licenses/>
  22 //
  23
  24 //
  25 // Each spool is a hub with 3 or 4 arms.  Each arm has a cup for
  26 // holding the filament.  The effective diameter can be adjusted by
  27 // setting the cup into a different seat in the arm.  The cups are
  28 // held on with simple clips, so the filement coil can easily be
  29 // removed and replaced.
  30 //
  31 // This file (and its includes) can generate:
  32 //
  33 // ===== Heavy duty 4-armed spool for 3mm x 100m coil =====
  34 //
  35 // A heavy duty 4-armed spool suitable for holding a 100m
  36 // Faberdashery coil on the spool arm of a Lulzbot TAZ-5.
  37 //
  38 //     Set
  39 //           fdia=2.85
  40 //           lightduty=false
  41 //     And print following parts
  42 //            Hub
  43 //            ArmEnd x 4
  44 //            FilamentCup x 4  (or FilamentCupPair x 2)
  45 //            CupSecuringClip x 4
  46 //
  47 //     You will also need  4 x M4 machine screws and nuts.
  48 //
  49 //     This is the default.
  50 //
  51 // ===== Light duty 3-armed spool for 3mm x <=30m coil =====
  52 //
  53 // A light duty 3-armed spool suitable for up to around 30m
  54 // of Faberdashery 2.85mm PLA.
  55 //
  56 //     Set
  57 //           fdia=2.85
  58 //           lightduty=true
  59 //     (or look in filamentspool-lt.scad).
  60 //
  61 //     And print following parts
  62 //           Hub
  63 //           ArmEnd x 3
  64 //           FilamentCup x 3  (or FilamentCup + FilamentCupPair)
  65 //           CupSecuringClip x 3
  66 //           TowerDoveClipPin x 6
  67 //
  68 //     When assembling, insert one TowerDoveClipPin from each side,
  69 //     joining each ArmEnd to the Hub with two TowerDoveClipPins.
  70 //     Modest force with pliers is good to seat them properly.
  71 //
  72 //     (note that the light duty and heavy duty CupSecuringClips
  73 //      are slightly different)
  74 //
  75 // ===== Notes regarding both the above spools =====
  76 //
  77 // When mounting either spool on the TAZ-5 spool arm, put the `pointy'
  78 // end of the hub towards the printer - ie, put put the spool on
  79 // `backwards'.  This ensures that the spool's arms will clear the
  80 // printer framework.
  81 //
  82 // For the above, I generally used the Cura `Standard' PLA profile.
  83 //
  84 // ===== TAZ-5 feed tube adjustment kit =====
  85 //
  86 // With a TAZ-5 I recommend using this kit to improve the feed
  87 // reliability:
  88 //
  89 //       Set
  90 //           fdia=2.85
  91 //     And print following parts
  92 //           FilamentGuideSpacer (ideally, at `high detail')
  93 //           FilamentGuideArmPrint (optional; `high detail' or `standard')
  94 //
  95 //     And possibly also
  96 //           t-nut_jig_0.2.stl
  97 //     from Aleph Objects - look here:
  98 //           http://download.lulzbot.com/TAZ/accessories/tool_heads/version_2/Dual_Extruder_v2/production_parts/stl/
  99 //
 100 // The spacer clips onto the filament guide tube holder arm, on the
 101 // inside, with the pointy flanged end towards the filament guide
 102 // tube.  It stops the filament guide tube angle (and so the
 103 // filament's natural pickup location) changing as the print head moves.
 104 //
 105 // The FilamentGuideArm[Print] is a replacement for the arm supplied
 106 // with your TAZ-5.  It's longer, so that the filament pickup point is
 107 // closer to the middle of the coil.  Use the t-nut_jig to stop the
 108 // T-nuts in the aluminium channel from annoyingly sliding down to the
 109 // bottom while you swap out the arm.
 110 //
 111 // (Faberdashery coils, and therefore both the above spools, have a
 112 // larger diameter than the flat-walled spools often supplied by other
 113 // vendors.  And the spools above have individual arms rather than a
 114 // continuous disc.  If the filament `unhooks' from the arm, it can
 115 // pull taught around the hub and stop feeding properly.)
 116 //
 117 // ===== Spool storage arm, for mounting on walls =====
 118 //
 119 // A storage arm suitable for screwing to walls, bookshelves,
 120 // etc. (requires non-countersunk M4 screws); will hold two heavy duty
 121 // spools each with a 100m coil.
 122 //
 123 //     Set
 124 //           fdia=2.85
 125 //           lightduty=false
 126 //     And print one of these, according to taste
 127 //            StorageArmLeft
 128 //            StorageArmRight
 129 //
 130 //     NB that the `light duty' version of this is shorter and
 131 //     will only take two `light duty' spools.
 132 //
 133 // A longer arm for three spools is also available:
 134 //     Set
 135 //           fdia=2.85
 136 //           lightduty=false
 137 //           storarm_spools=3
 138 //     (or look in filamentspool-storarm3.scad).
 139 //
 140 //     And print one of these, according to taste
 141 //            StorageArmLeft
 142 //            StorageArmRight
 143 //
 144 // For all of these, I used the Cura `High detail' PLA profile because
 145 // I wanted it pretty, but the `Standard' profile should do fine.
 146 //
 147 // ===== Spools for 1.75mm filament =====
 148 //
 149 // Spool (in many parts) for handing 1.75mm filament, printable
 150 // on, and with parts for mounting on, a Reprappro Huxley.
 151
 152
 153 fdia=2.85; // or 1.75
 154 lightduty=false; // or true
 155
 156
 157 slop=0.5;
 158 bigslop=slop*2;
 159
 160 function selsz(sm,lt,lg) = fdia < 2 ? sm : lightduty ? lt : lg;
 161 function usedove() = selsz(true,true,false);
 162
 163 num_arms = selsz(3,3,4);
 164
 165 channelslop=selsz(slop,0.75,slop);
 166
 167 exteffrad = 70;
 168 hubeffrad = selsz(30, 82, 40);
 169 hubbigrad = selsz(20, 38, 38);
 170 hublwidth = selsz(3, 2.5, 3.0);
 171 hubstemwidth = 2;
 172 hublthick = 10;
 173 hubaxlerad = selsz(5, 28/2, 28/2);
 174 totalheightfromtower = 240;
 175 axletowerfudgebend = 0;
 176 axleaxlefudgebend = 3;
 177 axlepadlen = 1.0;
 178
 179 armend_length = 120;
 180
 181 prongthick=selsz(5,4,5);
 182 prongwidth=selsz(5,4,5);
 183 prongribwidth=3;
 184 prongribheight=selsz(0,0,4);
 185 ratchetstep=15;
 186 ratchettooth=3;
 187 ratchettoothheight=5;
 188 ratchettoothsmoothr=1;
 189 ratchettoothslope=0.75;
 190 overlap=0.5;
 191 cupwidth=selsz(40,25,50);
 192 cupheight=selsz(75,35,75);
 193
 194 cupstrong_dx=selsz(0,0,-10);
 195
 196 propxshift = -6;
 197
 198 doveclipheight = 10;
 199
 200 teethh=3;
 201 teethgapx=4+fdia;
 202
 203 prongstalkxwidth=3;
 204
 205 stalklength=selsz(35,25,55);
 206 overclipcupgap=5;
 207 overclipdepth=15;
 208 overcliproundr=2.0;
 209 overclipthick=1.0;
 210 overclipcupnextgap=selsz(20,15,20);
 211
 212 hubaxlelen = selsz(25, 62.5, 77.5);
 213 echo(hubaxlelen);
 214
 215 overclipsmaller=-2.5;
 216 overclipbigger=0.0;
 217
 218 wingspoke=2.5;
 219 wingsize=6;
 220 wingthick=3;
 221
 222 armendwallthick=selsz(2.5, 1.8, 2.5);
 223 armendbasethick=selsz(1.2, 1.2, 1.2);
 224
 225 numbers_relief = 0.7;
 226 numbers_tick_len = 8;
 227 numbers_tick_width = 0.75;
 228 numbers_tick_linespc = 1.0;
 229 numbers_height_allow = 8;
 230
 231 axlehorizoffset = 12.5;
 232 axlevertheight = 100;
 233 towercliph = 16;
 234 towerclipcount = 3;
 235 towerpillarw = 5;
 236
 237 axlepinrad = 2;
 238 axlepintabrad = 5;
 239
 240 washerthick = 1.2;
 241 washerthinthick = 0.8;
 242 washerverythinthick = 0.4;
 243 washerrad = hubaxlerad + 7.5;
 244 frictionwasherarmwidth = 3;
 245 frictionwasherextrapush = 1.0;
 246
 247 ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 248
 249 nondove_armhole_x = 32;
 250 nondove_armhole_hole = 4 + 0.8;
 251 nondove_armhole_support = 7;
 252 nondove_armhole_wall = 3.2;
 253 nondove_armhole_slop = 0.5;
 254 nondove_armhole_slop_x = 0.5;
 255
 256 nondove_armbase = nondove_armhole_x + nondove_armhole_hole/2 +
 257   nondove_armhole_support;
 258 echo(nondove_armbase);
 259
 260 include <doveclip.scad>
 261 include <cliphook.scad>
 262 include <filamentteeth.scad>
 263 include <axlepin.scad>
 264 include <commitid.scad>
 265
 266 hub_clip_baseextend = (hubeffrad - DoveClip_depth()
 267                        - hubbigrad + hublwidth);
 268
 269 real_exteffrad = selsz(exteffrad + hub_clip_baseextend,
 270                        hubeffrad + DoveClip_depth(),
 271                        hubeffrad + nondove_armbase);
 272
 273 channelwidth = prongthick + channelslop;
 274 channeldepth = prongwidth + ratchettoothheight;
 275 totalwidth = armendwallthick*2 + channelwidth;
 276 totalheight = channeldepth + armendbasethick;
 277 stalkwidth = prongwidth + prongstalkxwidth;
 278
 279 tau = PI*2;
 280
 281 module ArmEnd(length=armend_length){ ////toplevel
 282   if (usedove()) {
 283     translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
 284       rotate([0,0,-90])
 285         DoveClipPairBase(h=doveclipheight);
 286     }
 287   } else {
 288     difference(){
 289       translate([1, -armendwallthick, -armendbasethick])
 290         mirror([1,0,0])
 291         cube([nondove_armbase+1, totalwidth, totalheight]);
 292       translate([-nondove_armbase + nondove_armhole_x,
 293                  -armendwallthick + totalwidth/2,
 294                  -armendbasethick -1])
 295         cylinder(r= nondove_armhole_hole/2, h=totalheight+2, $fn=10);
 296       translate([-nondove_armbase, -armendwallthick, -armendbasethick])
 297         rotate([90,0,0])
 298         Commitid_BestCount([nondove_armbase, totalwidth]);
 299     }
 300   }
 301
 302   difference(){
 303     union(){
 304       difference(){
 305         translate([0, -armendwallthick, -armendbasethick])
 306           cube([length, totalwidth, totalheight]);
 307         translate([-1, 0, 0])
 308           cube([length+1 - ratchettooth, channelwidth, channeldepth+1]);
 309         translate([-1, 0, ratchettoothheight])
 310           cube([length+2, channelwidth, channeldepth+1]);
 311       }
 312       for (dx = [0 : ratchetstep : length - ratchetstep]) translate([dx,0,0]) {
 313         translate([ratchettoothsmoothr+0.5, armendwallthick/2, 0]) minkowski(){
 314           rotate([90,0,0])
 315             cylinder($fn=20, r=ratchettoothsmoothr, h=armendwallthick);
 316           multmatrix([  [       1, 0, ratchettoothslope, 0      ],
 317                             [   0,      1,      0,      0       ],
 318                             [   0,      0,      1,      0       ],
 319                             [   0,      0,      0,      1       ]])
 320             cube([ratchettooth - ratchettoothsmoothr*2,
 321                   channelwidth, ratchettoothheight - ratchettoothsmoothr]);
 322         }
 323       }
 324     }
 325
 326     for (otherside=[0,1]) {
 327       for (circum = [300:100:1500]) {
 328         assign(rad = circum / tau)
 329           assign(fn = str("filamentspool-number-n",circum,".dxf"))
 330           assign(rotateoffset = [0, totalwidth/2, 0])
 331           assign(xlen = rad - real_exteffrad) {
 332           if (xlen >= numbers_tick_width/2
 333               + (otherside ? numbers_height_allow : 0) &&
 334               xlen <= length - (otherside ? 0 : numbers_height_allow))
 335             translate([xlen, -armendwallthick,
 336                        -armendbasethick + (totalheight - numbers_tick_len)/2])
 337             translate(rotateoffset)
 338             rotate([0,0, otherside*180])
 339             translate(-rotateoffset){
 340               translate([-numbers_tick_width/2, -1, 0])
 341                 cube([numbers_tick_width, numbers_relief+1, numbers_tick_len]);
 342               translate([numbers_tick_width/2 + numbers_tick_linespc,
 343                          1,
 344                          numbers_tick_len])
 345                 rotate([90,0,0])
 346                 rotate([0,0,-90])
 347                 linear_extrude(height= numbers_relief+1)
 348                 //    scale(templatescale)
 349                 import(file=fn, convexity=100);
 350             }
 351         }
 352       }
 353     }
 354
 355     if (usedove()){
 356       translate([0, -armendwallthick, -armendbasethick])
 357         Commitid_BestCount_M([length/3, totalwidth]);
 358     }
 359   }
 360 }
 361
 362 module FilamentCupHandle(){
 363   pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
 364   mirror([0,1,0]) {
 365     cube([stalklength, stalkwidth, prongthick]);
 366     translate([stalklength, stalkwidth/2, 0])
 367       cylinder(r=stalkwidth/2, h=prongthick, $fn=20);
 368     translate([ratchettoothsmoothr, stalkwidth, 0]) {
 369       minkowski(){
 370         cylinder($fn=20,r=ratchettoothsmoothr, h=1);
 371         multmatrix([    [       1, -ratchettoothslope, 0, 0     ],
 372                         [       0,      1,      0,      0       ],
 373                         [       0,      0,      1,      0       ],
 374                         [       0,      0,      0,      1       ]])
 375           cube([pawlusewidth,
 376                 ratchettoothheight - ratchettoothsmoothr,
 377                 prongthick - 1]);
 378       }
 379     }
 380   }
 381 }
 382
 383 module FilamentCupCup(){
 384   for (my=[0,1]) mirror([0,my,0]) {
 385     translate([0, cupwidth/2, 0])
 386       cube([cupheight + prongwidth, prongwidth, prongthick]);
 387   }
 388 }
 389
 390 module FilamentCupPositive() {
 391   FilamentCupHandle();
 392
 393   gapy = prongwidth;
 394   dy = cupwidth/2 + gapy + overclipcupgap;
 395   baselen = dy+cupwidth/2;
 396
 397   translate([0, dy, 0])
 398     FilamentCupCup();
 399   cube([prongwidth, baselen+1, prongthick]);
 400
 401   translate([cupstrong_dx, prongwidth, 0]) {
 402     cube([prongwidth, baselen-prongwidth, prongthick]);
 403     for (y = [0, .33, .67, 1])
 404       translate([0, (baselen - prongwidth) * y, 0])
 405         cube([-cupstrong_dx + 1, prongwidth, prongthick]);
 406   }
 407   if (cupstrong_dx != 0) {
 408     rotate([0,0,45])
 409       translate([-prongwidth*.55, -prongwidth*2.1, 0])
 410       cube([prongwidth*(2.65), prongwidth*4.2, prongthick]);
 411   }
 412
 413   translate([0, -0.2, 0])
 414     cube([prongribwidth, baselen, prongthick + prongribheight]);
 415
 416   if (prongribheight > 0) {
 417     translate([-prongwidth, baselen, 0])
 418       cube([cupheight/2, prongwidth + prongribheight, prongribwidth]);
 419   }
 420
 421   midrad = cupwidth/2 + prongwidth/2;
 422
 423   propshift = stalklength - overclipdepth - prongthick + propxshift;
 424   proptaken = propshift;
 425   echo(midrad, propshift, proptaken);
 426
 427   translate([propshift, -1, 0]) {
 428     // something is wrong with the y calculation
 429     cube([prongwidth,
 430           gapy+2,
 431           prongthick]);
 432   }
 433   for (y = [overclipcupgap, overclipcupgap+overclipcupnextgap]) {
 434     translate([cupstrong_dx, y + prongwidth, 0])
 435       rotate([0,0, 102 + fdia])
 436       FilamentTeeth(fdia=fdia, h=teethh);
 437   }
 438   for (x = [-0.3, -1.3]) {
 439     translate([cupheight + overclipcupnextgap*x, baselen + prongwidth, 0])
 440       rotate([0,0, 12 + fdia])
 441       FilamentTeeth(fdia=fdia, h=teethh);
 442   }
 443 }
 444
 445 module FilamentCup() { ////toplevel
 446   difference(){
 447     FilamentCupPositive();
 448     translate([0, -stalkwidth, 0])
 449       Commitid_BestCount_M([stalklength - stalkwidth, stalkwidth]);
 450   }
 451 }
 452
 453 module CupSecuringClipSolid(w,d,h1,h2){
 454   rotate([0,-90,0]) translate([0,-h1/2,-w/2]) linear_extrude(height=w) {
 455     polygon(points=[[0,0], [d,0], [d,h2], [0,h1]]);
 456   }
 457 }
 458
 459 module CupSecuringClipSolidSmooth(xrad=0, xdepth=0){
 460   hbase = totalheight + prongstalkxwidth - overcliproundr*2;
 461   minkowski(){
 462     CupSecuringClipSolid(w=totalwidth,
 463                          d=overclipdepth + xdepth,
 464                          h1=hbase - overclipsmaller,
 465                          h2=hbase + overclipbigger);
 466     cylinder($fn=20, h=0.01, r=overcliproundr+xrad);
 467   }
 468 }
 469
 470 module CupSecuringClip(){ ////toplevel
 471   wingswidth = wingspoke*2 + overclipthick*2 + overcliproundr*2 + totalwidth;
 472   difference(){
 473     union(){
 474       CupSecuringClipSolidSmooth(xrad=overclipthick, xdepth=0);
 475       translate([-wingswidth/2, -wingsize/2, 0])
 476         cube([wingswidth, wingsize, wingthick]);
 477       translate([-wingsize/2, -wingswidth/2, 0])
 478         cube([wingsize, wingswidth, wingthick]);
 479     }
 480     translate([0,0,-0.1])
 481       CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2);
 482   }
 483 }
 484
 485 module ArmDoveClipPin(){ ////toplevel
 486   DoveClipPin(h=doveclipheight);
 487 }
 488
 489 module TowerDoveClipPin(){ ////toplevel
 490   DoveClipPin(h=towercliph/2);
 491 }
 492
 493 module Hub(){ ////toplevel
 494   axlerad = hubaxlerad + slop;
 495   xmin = axlerad+hublwidth/2;
 496   xmax = hubbigrad-hublwidth/2;
 497   hole = hubeffrad - hubbigrad - DoveClip_depth() - hublwidth*2;
 498   holewidth = DoveClipPairSane_width() - hubstemwidth*2;
 499   nondove_allwidth = nondove_armhole_wall*2 + totalwidth;
 500   difference(){
 501     union(){
 502       difference(){
 503         cylinder($fn=60, h=hublthick, r=hubbigrad);
 504         translate([0,0,-1])
 505           cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
 506       }
 507       cylinder(h=hubaxlelen, r=axlerad+hublwidth);
 508       for (ang=[0 : 360/num_arms : 359])
 509         rotate([0,0,ang]) {
 510           if (usedove()){
 511             difference() {
 512               translate([hubeffrad,0,0])
 513                 DoveClipPairSane(h=doveclipheight,
 514                                  baseextend = hub_clip_baseextend);
 515               if (hole>hublwidth && holewidth > 2) {
 516                 translate([hubbigrad + hublwidth, -holewidth/2, -1])
 517                   cube([hole, holewidth, hublthick+2]);
 518               }
 519             }
 520           } else {
 521             difference(){
 522               translate([0,
 523                          -nondove_allwidth/2,
 524                          0])
 525                 cube([hubeffrad + nondove_armhole_x
 526                       + nondove_armhole_hole/2 + nondove_armhole_support,
 527                       nondove_allwidth,
 528                       nondove_armhole_wall + totalheight]);
 529               translate([hubeffrad - nondove_armhole_slop_x,
 530                          -nondove_allwidth/2
 531                          + nondove_armhole_wall - nondove_armhole_slop,
 532                          nondove_armhole_wall])
 533                 cube([nondove_armhole_x + 50,
 534                       totalwidth + nondove_armhole_slop*2,
 535                       totalheight + 1]);
 536               translate([hubeffrad + nondove_armhole_x, 0, -20])
 537                 cylinder(r= nondove_armhole_hole/2, h=50, $fn=10);
 538             }
 539           }
 540         }
 541       for (ang = [0 : 180/num_arms : 359])
 542         rotate([0,0,ang]) rotate([90,0,0]) {
 543           translate([0,0,-hublwidth/2])
 544             linear_extrude(height=hublwidth)
 545             polygon([[xmin,0.05], [xmax,0.05],
 546                      [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
 547         }
 548     }
 549     translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
 550
 551     rotate([0,0, selsz(0,0,45)])
 552       translate([axlerad+hublwidth,
 553                  -hublwidth/2,
 554                  0])
 555       rotate([90,0,0])
 556       Commitid_BestCount([(hubbigrad-hublwidth) - (axlerad+hublwidth),
 557                           hublthick +
 558                           hublwidth/2 * hubaxlelen/(hubbigrad-axlerad),
 559                           ]);
 560   }
 561 }
 562
 563 module ArmExtender(){ ////toplevel
 564   DoveClipExtender(length=exteffrad-hubeffrad,
 565                    ha=doveclipheight,
 566                    hb=doveclipheight);
 567 }
 568
 569 module FsAxlePin(){ ////toplevel
 570   AxlePin(hubaxlerad, washerrad*2, axlepinrad, axlepintabrad, slop);
 571 }
 572
 573 module Axle(){ ////toplevel
 574   pillarswidth = DoveClipPairSane_width(towerclipcount);
 575
 576   rotate([0,0, -( axleaxlefudgebend + atan(slop/hubaxlelen) ) ])
 577   translate([-axlehorizoffset, -axlevertheight, 0]) {
 578     rotate([0,0,-axletowerfudgebend])
 579     rotate([0,0,-90])
 580       DoveClipPairSane(h=towercliph, count=towerclipcount, baseextend=3);
 581     translate([0, DoveClip_depth(), 0])
 582     rotate([0,0,90])
 583       ExtenderPillars(axlevertheight - DoveClip_depth(),
 584                       pillarswidth, towercliph,
 585                       pillarw=towerpillarw);
 586   }
 587
 588   axleclearlen = hubaxlelen + slop*4 + washerthick*2 + axlepadlen;
 589   axlerad = hubaxlerad-slop;
 590   bump = axlerad * 0.2;
 591   shift = axlerad-bump;
 592   joinbelowallow = 3;
 593
 594   intersection(){
 595     translate([0, 0, shift]) {
 596       difference() {
 597         union(){
 598           translate([-1, 0, 0])
 599             rotate([0,90,0])
 600             cylinder($fn=60,
 601                      r = axlerad,
 602                      h = 1 + axleclearlen + axlepinrad*2 + 2);
 603           mirror([1,0,0]) rotate([0,90,0])
 604             cylinder(r = axlerad*1.75, h = 3);
 605           intersection(){
 606             mirror([1,0,0])
 607               translate([axlehorizoffset - pillarswidth/2, 0, 0])
 608               rotate([0,90,0])
 609               cylinder($fn=60,
 610                        r = towercliph - shift,
 611                        h = pillarswidth);
 612             translate([-50, -joinbelowallow, -50])
 613               cube([100, joinbelowallow+50, 100]);
 614           }
 615         }
 616         rotate([90,0,0])
 617         translate([axleclearlen + axlepinrad/2, 0, -25])
 618           cylinder(r = axlepinrad + slop, h=50);
 619       }
 620     }
 621     translate([-50,-50,0]) cube([100,100,100]);
 622   }
 623 }
 624
 625 module washer(thick){
 626   Washer(hubaxlerad, washerrad, thick, slop);
 627 }
 628
 629 module AxleWasher(){ ////toplevel
 630   washer(thick=washerthick);
 631 }
 632
 633 module AxleThinWasher(){ ////toplevel
 634   washer(thick=washerthinthick);
 635 }
 636
 637 module AxleVeryThinWasher(){ ////toplevel
 638   washer(thick=washerverythinthick);
 639 }
 640
 641 module AxleFrictionWasher(){ ////toplevel
 642   difference(){
 643     cylinder(h=washerthick, r=washerrad);
 644     translate([0,0,-1]) cylinder(h=washerthick+2, r=hubaxlerad+slop);
 645   }
 646   frarmr = hubbigrad;
 647   frarmw = frictionwasherarmwidth;
 648   frarmpawlr = hublwidth;
 649   frarmpawlpush = slop*4 + frictionwasherextrapush;
 650   for (ang=[0,180]) rotate([0,0,ang]) {
 651     translate([washerrad-1, -frarmw/2, 0])
 652       cube([frarmr - washerrad + 1, frarmw, washerthick]);
 653     intersection(){
 654       translate([frarmr - frarmpawlr, -50, 0])
 655         cube([frarmpawlr, 100, 50]);
 656       rotate([0,90,0])
 657         cylinder(h = 50, r = frarmpawlpush, $fn=36);
 658     }
 659   }
 660 }
 661
 662 module TowerExtender(){ ////toplevel
 663   l = totalheightfromtower - axlevertheight;
 664   echo("TowerExtender",l);
 665   DoveClipExtender(length = l,
 666                    ha = towercliph, hb = towercliph,
 667                    counta = towerclipcount, countb = towerclipcount,
 668                    pillarw = towerpillarw);
 669 }
 670
 671 module FilamentCupPair(){ ////toplevel
 672   FilamentCup();
 673   translate([cupheight + prongthick*3,
 674              cupwidth/2*1.7,
 675              0])
 676     rotate([0,0,180]) FilamentCup();
 677 }
 678
 679 //----- storarm -----
 680
 681 storarm_hooklen = 8;
 682 storarm_hookheight = 5;
 683 storarm_thick = 10;
 684 storarm_axleslop = 4;
 685
 686 storarm_base_w = 30;
 687 storarm_base_h = 100;
 688 storarm_base_d = 15;
 689 storarm_base_mind = 2;
 690
 691 storarm_cope_hubaxle_mk1 = true;
 692
 693 storarm_screw_hole = 4;
 694 storarm_screw_hole_slop = 0.5;
 695 storarm_besides_hole = 4;
 696
 697 storarm_under_hole = 5;
 698 storarm_screw_hole_head = 8.8;
 699 storarm_screw_hole_head_slop = 1.5;
 700
 701 // calculated
 702
 703 storarm_spools = 2;
 704
 705 storarm_axlerad = hubaxlerad - storarm_axleslop;
 706 storarm_mainlen = hubaxlelen*storarm_spools
 707   + storarm_axleslop*(storarm_spools-1)
 708   + (storarm_cope_hubaxle_mk1 ? 10 : 0);
 709 storarm_totlen = storarm_mainlen + storarm_hooklen;
 710
 711 storarm_taller = storarm_axleslop * (storarm_spools-2);
 712
 713 storarm_mid_off_y = storarm_axlerad;
 714
 715 storarm_base_off_y = storarm_mid_off_y + storarm_base_h/2;
 716
 717 module StorageArmDiagPartSide(xmin, xmax){
 718   xsz = xmax-xmin;
 719   yuse = storarm_thick/2;
 720
 721   intersection(){
 722     translate([xmin-1, -storarm_axlerad, storarm_thick/2])
 723       rotate([0,90,0])
 724       cylinder(r=storarm_axlerad, h=xsz+2, $fn=60);
 725     translate([xmin, -yuse, 0])
 726       cube([xsz, yuse, storarm_thick]);
 727   }
 728 }
 729
 730 module StorageArmDiagPart(xmin, xmax, adjbot, shear){
 731   hull(){
 732     StorageArmDiagPartSide(xmin,xmax);
 733
 734     multmatrix([[1,0,0,0],
 735                 [shear,1,0,0],
 736                 [0,0,1,0],
 737                 [0,0,0,1]])
 738       translate([0, -storarm_axlerad*2 + adjbot, 0])
 739       mirror([0,1,0])
 740       StorageArmDiagPartSide(xmin,xmax);
 741   }
 742 }
 743
 744 module StorageArmBaseTemplate(){
 745   square([storarm_base_w, storarm_base_h]);
 746 }
 747
 748 module StorageArmAtMountingHoles(){
 749   bes = storarm_besides_hole + storarm_screw_hole;
 750
 751   x0 = bes;
 752   x1 = storarm_base_w-bes;
 753   y1 = storarm_base_h - bes;
 754   y0 = bes;
 755
 756   for (pos=[ [x0, y1],
 757              [x1, y1],
 758              [x1, y0] ]) {
 759     rotate([0,90,0])
 760       translate([pos[0] - storarm_base_w,
 761                  pos[1] - storarm_base_off_y, -storarm_base_d])
 762       children();
 763   }
 764 }
 765
 766 module StorageArmRight(){ ////toplevel
 767   shear = storarm_hookheight / (storarm_mainlen/2);
 768   shear2 = shear + storarm_taller / (storarm_mainlen/2);
 769   base_xyz = [-storarm_base_d, -storarm_base_off_y, storarm_base_w];
 770
 771   StorageArmDiagPart(-1, storarm_mainlen/2+1,
 772                      -storarm_taller, shear2);
 773   StorageArmDiagPart(storarm_mainlen/2-1, storarm_mainlen+1,
 774                      storarm_hookheight/2, shear/2);
 775
 776   translate([0, storarm_hookheight, 0])
 777     StorageArmDiagPart(storarm_mainlen, storarm_totlen,
 778                        -storarm_hookheight/2, shear/2);
 779
 780   difference(){
 781     union(){
 782       hull(){
 783         translate(base_xyz)
 784           rotate([0,90,0])
 785           linear_extrude(height=storarm_base_mind)
 786           StorageArmBaseTemplate();
 787         StorageArmDiagPart(-1, 0, -storarm_taller, shear);
 788       }
 789       StorageArmAtMountingHoles(){
 790         cylinder(r= storarm_screw_hole_head/2,
 791                  h=10);
 792       }
 793     }
 794     StorageArmAtMountingHoles(){
 795       translate([0,0,-1])
 796         cylinder(r= (storarm_screw_hole + storarm_screw_hole_slop)/2 ,
 797                  h=20);
 798       translate([0,0,storarm_under_hole])
 799         cylinder(r= (storarm_screw_hole_head + storarm_screw_hole_head_slop)/2,
 800                  h=20);
 801     }
 802     translate(base_xyz + [0, storarm_base_h/4, -storarm_base_w/4])
 803       rotate([0,90,0])
 804       Commitid_BestCount([storarm_base_w/2, storarm_base_h/2]);
 805   }
 806 }
 807
 808 module StorageArmLeft(){ ////toplevel
 809   mirror([1,0,0]) StorageArmRight();
 810 }
 811
 812 module StorArmHoleTest(){ ////toplevel
 813   sz = storarm_screw_hole_head + storarm_besides_hole*2;
 814   intersection(){
 815     StorageArmRight();
 816     translate([-50, -storarm_base_off_y, -1])
 817       cube([100, sz, sz+1]);
 818   }
 819 }
 820
 821
 822 //----- filament guide spacer -----
 823
 824 guide_armdia = 15.0;
 825 guide_armwidth = 10.2;
 826 guide_armcorelen = 25.0;
 827 guide_clipcirclethick = 10.0;
 828
 829 guidefilclip_outerdia = 22.8;
 830
 831 guidespacer_armslop = 0.75;
 832 guidespacer_armlenslop = 1.05;
 833
 834 guidespacer_prongprotrude = 4;
 835 guidespacer_thick = 1.6;
 836
 837 // calculated
 838
 839 guidespacer_armdia = guide_armdia + guidespacer_armslop;
 840 guidespacer_armwidth = guide_armwidth + guidespacer_armslop;
 841 guidespacer_len = guide_armcorelen - guide_clipcirclethick
 842   + guidespacer_armlenslop;
 843
 844 guidespacer_wingheight = (guidefilclip_outerdia - guidespacer_armdia)/2;
 845
 846 module FilamentGuideArmTemplate(extra=0){
 847   intersection(){
 848     circle(r= (guidespacer_armdia/2) + extra);
 849     square(center=true, [guidespacer_armwidth+extra*2,
 850                          guidespacer_armdia + extra*2 + 10]);
 851   }
 852 }
 853
 854 module FilamentGuideSpacerInnerTemplate(){
 855   FilamentGuideArmTemplate();
 856   translate([0, -guidespacer_armdia/2])
 857     square(center=true, [guidespacer_armwidth - guidespacer_prongprotrude,
 858                          guidespacer_armdia]);
 859 }
 860
 861 module FilamentGuideSpacer(){ ////toplevel
 862   difference(){
 863     union(){
 864       linear_extrude(height= guidespacer_len)
 865         FilamentGuideArmTemplate(extra= guidespacer_thick);
 866       for (angle=[26, 60]) {
 867         for (m=[0,1]) {
 868           mirror([m,0,0]) {
 869             rotate([0,0,angle]) {
 870               hull(){
 871                 for (t=[[0, guidespacer_wingheight],
 872                         [guidespacer_len-1, -guidespacer_wingheight]])
 873                   translate([0,0, t[0] + 0.5])
 874                     cube([guidespacer_thick, guidespacer_armdia + t[1]*2,
 875                       1],
 876                          center=true);
 877               }
 878             }
 879           }
 880         }
 881       }
 882     }
 883     translate([0,0,-1])
 884       linear_extrude(height= guidespacer_len+5)
 885       FilamentGuideSpacerInnerTemplate();
 886   }
 887 }
 888
 889
 890 //----- replacement filament guide arm for TAZ-5 -----
 891
 892 guidearm_armslop = 0.25;
 893 guidearm_armlenslop = 0.25;
 894
 895 guidearm_hookprotr = 3;
 896 guidearm_hookprotrflat = 1;
 897 guidearm_hookslope = 0.3;
 898
 899 guidearm_totallen = 60;
 900
 901 guidearm_screwplatesz = 12;
 902 guidearm_screwplateth = 4;
 903 guidearm_screwplatewd = 15;
 904 guidearm_screwhole = 5 + 0.5;
 905
 906 guidearm_bendlen = 40;
 907 guidearm_bendslot = 4.5;
 908
 909 guidearm_stopthick = 4;
 910 guidearm_protrslop = 1.0;
 911
 912 // calculated
 913
 914 guidearm_armdia = guide_armdia - guidearm_armslop;
 915 guidearm_armwidth = guide_armwidth - guidearm_armslop;
 916 guidearm_armcorelen = guide_armcorelen + guidearm_armlenslop;
 917
 918 guidearm_base_z0 = -(guidearm_totallen - guidearm_armcorelen);
 919
 920 guidearm_realbendlen = min(guidearm_bendlen,
 921                            guidearm_totallen - guidearm_screwplateth - 0.1);
 922 guidearm_slopelen = guidearm_hookprotr/guidearm_hookslope;
 923
 924 module FilamentGuideArmStop(h){
 925   for (ts=[-1,+1]) {
 926     translate([ts * guidearm_hookprotr, 0,0])
 927       cylinder(r=guidearm_armdia/2, h, $fn=80);
 928   }
 929 }
 930
 931 module FilamentGuideArmShaftPositive(){
 932   r = guidearm_armdia/2;
 933
 934   translate([0,0, guidearm_base_z0+1])
 935     cylinder(r=r, h= guidearm_totallen, $fn=80);
 936   translate([0,0, guidearm_armcorelen]){
 937     hull(){
 938       FilamentGuideArmStop(guidearm_hookprotrflat);
 939       translate([0,0, guidearm_slopelen])
 940         cylinder(r=r, h=guidearm_hookprotrflat, $fn=80);
 941     }
 942   }
 943   mirror([0,0,1])
 944     FilamentGuideArmStop(guidearm_stopthick);
 945 }
 946
 947 module FilamentGuideArmBase(){
 948   translate([0,
 949              (guidearm_screwplatewd - guidearm_armwidth)/2,
 950              guidearm_base_z0]){
 951     difference(){
 952       translate([0,0, guidearm_screwplateth/2])
 953         cube(center=true,
 954              [guidearm_armdia + guidearm_screwplatesz*2,
 955               guidearm_screwplatewd,
 956               guidearm_screwplateth]);
 957       for (ts=[-1,+1]) {
 958         translate([ts * (guidearm_armdia/2 + guidearm_screwplatesz/2),
 959                    0,
 960                    -20])
 961           cylinder(r= guidearm_screwhole/2, h=40, $fn=20);
 962       }
 963     }
 964   }
 965 }
 966
 967 module FilamentGuideArm(){ ///toplevel
 968   intersection(){
 969     difference(){
 970       FilamentGuideArmShaftPositive();
 971       translate([-guidearm_bendslot/2,
 972                  -50,
 973                  -guidearm_realbendlen + guidearm_armcorelen])
 974         cube([guidearm_bendslot,
 975               100,
 976               guidearm_realbendlen + 100]);
 977       hull(){
 978         for (zx=[ [ 0, guidearm_bendslot ],
 979                   [ guidearm_armcorelen + guidearm_slopelen,
 980                     guidearm_hookprotr*2 + guidearm_protrslop ]
 981                   ]) {
 982           translate([-zx[1]/2, -50, zx[0]])
 983           cube([zx[1], 100, 1]);
 984         }
 985       }
 986     }
 987     cube(center=true,
 988          [guidearm_armdia*2,
 989           guidearm_armwidth,
 990           guidearm_totallen*3]);
 991   }
 992   FilamentGuideArmBase();
 993 }
 994
 995 module FilamentGuideArmPrint(){ ////toplevel
 996   rotate([90,0,0])
 997     FilamentGuideArm();
 998 }
 999
1000 module Demo(){ ////toplevel
1001   translate([-real_exteffrad,-20,0]) Hub();
1002   ArmEnd();
1003   translate([ratchettooth*2, 30, 0]) FilamentCup();
1004   if (selsz(true,false,false)) {
1005     translate([-exteffrad + hubeffrad - hub_clip_baseextend, -10, 0])
1006       ArmExtender();
1007   }
1008 }
1009
1010 //ArmEnd();
1011 //FilamentCup();
1012 //FilamentCupPair();
1013 //CupSecuringClip();
1014 //Hub();
1015 //ArmExtender();
1016 //Axle();
1017 //AxleWasher();
1018 //AxlePin();
1019 //AxleFrictionWasher();
1020 //StorageArmLeft();
1021 //StorArmHoleTest();
1022 //FilamentGuideSpacer();
1023 //FilamentGuideArm();
1024 //FilamentGuideArmPrint();
1025 //Demo();