4 // 3D design for filament spools to hold coils as supplied by Faberdashery
8 // Copyright 2012,2013,2016 Ian Jackson
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.
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.
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/>
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.
31 // This file (and its includes) can generate:
33 // ===== Heavy duty 4-armed spool for 3mm x 100m coil =====
35 // A heavy duty 4-armed spool suitable for holding a 100m
36 // Faberdashery coil on the spool arm of a Lulzbot TAZ-5.
41 // And print following parts
44 // FilamentCup x 4 (or FilamentCupPair x 2)
45 // CupSecuringClip x 4
47 // You will also need 4 x M4 machine screws and nuts.
49 // ===== Light duty 3-armed spool for 3mm x <=30m coil =====
51 // A light duty 3-armed spool suitable for up to around 30m
52 // of Faberdashery 2.85mm PLA.
57 // And print following parts
60 // FilamentCup x 3 (or FilamentCup + FilamentCupPair)
61 // CupSecuringClip x 3
62 // TowerDoveClipPin x 6
64 // When assembling, insert one TowerDoveClipPin from each side,
65 // joining each ArmEnd to the Hub with two TowerDoveClipPins.
66 // Modest force with pliers is good to seat them properly.
68 // (note that the light duty and heavy duty CupSecuringClips
69 // are slightly different)
71 // ===== Notes regarding both the above spools =====
73 // When mounting either spool on the TAZ-5 spool arm, put the `pointy'
74 // end of the hub towards the printer - ie, put put the spool on
75 // `backwards'. This ensures that the spool's arms will clear the
78 // For the above, I generally used the Cura `Standard' PLA profile.
80 // ===== TAZ-5 feed tube adjustment kit =====
82 // With a TAZ-5 I recommend using this kit to improve the feed
87 // And print following parts
88 // FilamentGuideSpacer (ideally, at `high detail')
89 // FilamentGuideArmPrint (optional; `high detail' or `standard')
93 // from Aleph Objects - look here:
94 // http://download.lulzbot.com/TAZ/accessories/tool_heads/version_2/Dual_Extruder_v2/production_parts/stl/
96 // The spacer clips onto the filament guide tube holder arm, on the
97 // inside, with the pointy flanged end towards the filament guide
98 // tube. It stops the filament guide tube angle (and so the
99 // filament's natural pickup location) changing as the print head moves.
101 // The FilamentGuideArm[Print] is a replacement for the arm supplied
102 // with your TAZ-5. It's longer, so that the filament pickup point is
103 // closer to the middle of the coil. Use the t-nut_jig to stop the
104 // T-nuts in the aluminium channel from annoyingly sliding down to the
105 // bottom while you swap out the arm.
107 // (Faberdashery coils, and therefore both the above spools, have a
108 // larger diameter than the flat-walled spools often supplied by other
109 // vendors. And the spools above have individual arms rather than a
110 // continuous disc. If the filament `unhooks' from the arm, it can
111 // pull taught around the hub and stop feeding properly.)
113 // ===== Spool storage arm, for mounting on walls =====
115 // A storage arm suitable for screwing to walls, bookshelves,
116 // etc. (requires non-countersunk M4 screws); will hold two heavy duty
117 // spools each with a 100m coil.
122 // And print one of these, according to taste
126 // NB that the `light duty' version of this is shorter and
127 // will only take two `light duty' spools.
129 // For the above, I used the Cura `High detail' PLA profile because
130 // I wanted it pretty, but the `Standard' profile should do fine.
132 // ===== Spools for 1.75mm filament =====
134 // Spool (in many parts) for handing 1.75mm filament, printable
135 // on, and with parts for mounting on, a Reprappro Huxley.
138 fdia=2.85; // or 1.75
139 lightduty=false; // or true
145 function selsz(sm,lt,lg) = fdia < 2 ? sm : lightduty ? lt : lg;
146 function usedove() = selsz(true,true,false);
148 num_arms = selsz(3,3,4);
150 channelslop=selsz(slop,0.75,slop);
153 hubeffrad = selsz(30, 82, 40);
154 hubbigrad = selsz(20, 38, 38);
155 hublwidth = selsz(3, 2.5, 4);
158 hubaxlerad = selsz(5, 28/2, 28/2);
159 totalheightfromtower = 240;
160 axletowerfudgebend = 0;
161 axleaxlefudgebend = 3;
166 prongthick=selsz(5,4,5);
167 prongwidth=selsz(5,4,5);
169 prongribheight=selsz(0,0,4);
172 ratchettoothheight=5;
173 ratchettoothsmoothr=1;
174 ratchettoothslope=0.75;
176 cupwidth=selsz(40,25,50);
177 cupheight=selsz(55,25,55);
179 cupstrong_dx=selsz(0,0,-10);
190 stalklength=selsz(35,25,55);
195 overclipcupnextgap=selsz(20,15,20);
197 hubaxlelen = selsz(25, 62.5, 77.5);
200 overclipsmaller=-2.5;
207 armendwallthick=selsz(2.5, 1.8, 2.5);
208 armendbasethick=selsz(1.2, 1.2, 1.2);
210 axlehorizoffset = 12.5;
211 axlevertheight = 100;
220 washerthinthick = 0.8;
221 washerverythinthick = 0.4;
222 washerrad = hubaxlerad + 7.5;
223 frictionwasherarmwidth = 3;
224 frictionwasherextrapush = 1.0;
226 ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
228 nondove_armhole_x = 32;
229 nondove_armhole_hole = 4 + 0.8;
230 nondove_armhole_support = 7;
231 nondove_armhole_wall = 3.2;
232 nondove_armhole_slop = 0.5;
233 nondove_armhole_slop_x = 0.5;
235 nondove_armbase = nondove_armhole_x + nondove_armhole_hole/2 +
236 nondove_armhole_support;
237 echo(nondove_armbase);
239 real_exteffrad = selsz(exteffrad,
240 hubeffrad + nondove_armbase,
241 hubeffrad + nondove_armbase);
243 include <doveclip.scad>
244 include <cliphook.scad>
245 include <filamentteeth.scad>
246 include <axlepin.scad>
248 channelwidth = prongthick + channelslop;
249 channeldepth = prongwidth + ratchettoothheight;
250 totalwidth = armendwallthick*2 + channelwidth;
251 totalheight = channeldepth + armendbasethick;
252 stalkwidth = prongwidth + prongstalkxwidth;
256 module ArmEnd(length=armend_length){ ////toplevel
258 translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
260 DoveClipPairBase(h=doveclipheight);
264 translate([1, -armendwallthick, -armendbasethick])
266 cube([nondove_armbase+1, totalwidth, totalheight]);
267 translate([-nondove_armbase + nondove_armhole_x,
268 -armendwallthick + totalwidth/2,
269 -armendbasethick -1])
270 cylinder(r= nondove_armhole_hole/2, h=totalheight+2, $fn=10);
275 for (circum = [300:100:1500]) {
276 assign(rad = circum / tau)
277 assign(fn = str("filamentspool-number-n",circum,".dxf"))
278 assign(xlen = rad - real_exteffrad) {
279 echo(circum, rad, xlen);
280 translate([xlen, -armendwallthick, -armendbasethick])
282 translate([-.5,-1,0]) cube([1,2,15]);
284 translate([0,0, totalheight - 1])
287 linear_extrude(height=10)
288 // scale(templatescale)
289 import(file=fn, convexity=100);
295 translate([0, -armendwallthick, -armendbasethick])
296 cube([length, totalwidth, totalheight]);
297 translate([-1, 0, 0])
298 cube([length+1 - ratchettooth, channelwidth, channeldepth+1]);
299 translate([-1, 0, ratchettoothheight])
300 cube([length+2, channelwidth, channeldepth+1]);
302 for (dx = [0 : ratchetstep : length - ratchetstep]) translate([dx,0,0]) {
303 translate([ratchettoothsmoothr+0.5, armendwallthick/2, 0]) minkowski(){
305 cylinder($fn=20, r=ratchettoothsmoothr, h=armendwallthick);
306 multmatrix([ [ 1, 0, ratchettoothslope, 0 ],
310 cube([ratchettooth - ratchettoothsmoothr*2,
311 channelwidth, ratchettoothheight - ratchettoothsmoothr]);
316 module FilamentCupHandle(){
317 pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
319 cube([stalklength, stalkwidth, prongthick]);
320 translate([stalklength, stalkwidth/2, 0])
321 cylinder(r=stalkwidth/2, h=prongthick, $fn=20);
322 translate([ratchettoothsmoothr, stalkwidth, 0]) {
324 cylinder($fn=20,r=ratchettoothsmoothr, h=1);
325 multmatrix([ [ 1, -ratchettoothslope, 0, 0 ],
330 ratchettoothheight - ratchettoothsmoothr,
337 module FilamentCupCup(){
338 for (my=[0,1]) mirror([0,my,0]) {
339 translate([0, cupwidth/2, 0])
340 cube([cupheight + prongwidth, prongwidth, prongthick]);
344 module FilamentCup() { ////toplevel
348 dy = cupwidth/2 + gapy + overclipcupgap;
349 baselen = dy+cupwidth/2;
351 translate([0, dy, 0])
353 cube([prongwidth, baselen+1, prongthick]);
355 translate([cupstrong_dx, prongwidth, 0]) {
356 cube([prongwidth, baselen-prongwidth, prongthick]);
357 for (y = [0, .33, .67, 1])
358 translate([0, (baselen - prongwidth) * y, 0])
359 cube([-cupstrong_dx + 1, prongwidth, prongthick]);
361 if (cupstrong_dx != 0) {
363 translate([-prongwidth*.55, -prongwidth*2.1, 0])
364 cube([prongwidth*(2.65), prongwidth*4.2, prongthick]);
367 translate([0, -0.2, 0])
368 cube([prongribwidth, baselen, prongthick + prongribheight]);
370 if (prongribheight > 0) {
371 translate([-prongwidth, baselen, 0])
372 cube([cupheight/2, prongwidth + prongribheight, prongribwidth]);
375 midrad = cupwidth/2 + prongwidth/2;
377 propshift = stalklength - overclipdepth - prongthick + propxshift;
378 proptaken = propshift;
379 echo(midrad, propshift, proptaken);
381 translate([propshift, -1, 0]) {
382 // something is wrong with the y calculation
387 for (y = [overclipcupgap, overclipcupgap+overclipcupnextgap]) {
388 translate([cupstrong_dx, y + prongwidth, 0])
389 rotate([0,0, 102 + fdia])
390 FilamentTeeth(fdia=fdia, h=teethh);
392 for (x = [-0.3, -1.3]) {
393 translate([cupheight + overclipcupnextgap*x, baselen + prongwidth, 0])
394 rotate([0,0, 12 + fdia])
395 FilamentTeeth(fdia=fdia, h=teethh);
399 module CupSecuringClipSolid(w,d,h1,h2){
400 rotate([0,-90,0]) translate([0,-h1/2,-w/2]) linear_extrude(height=w) {
401 polygon(points=[[0,0], [d,0], [d,h2], [0,h1]]);
405 module CupSecuringClipSolidSmooth(xrad=0, xdepth=0){
406 hbase = totalheight + prongstalkxwidth - overcliproundr*2;
408 CupSecuringClipSolid(w=totalwidth,
409 d=overclipdepth + xdepth,
410 h1=hbase - overclipsmaller,
411 h2=hbase + overclipbigger);
412 cylinder($fn=20, h=0.01, r=overcliproundr+xrad);
416 module CupSecuringClip(){ ////toplevel
417 wingswidth = wingspoke*2 + overclipthick*2 + overcliproundr*2 + totalwidth;
420 CupSecuringClipSolidSmooth(xrad=overclipthick, xdepth=0);
421 translate([-wingswidth/2, -wingsize/2, 0])
422 cube([wingswidth, wingsize, wingthick]);
423 translate([-wingsize/2, -wingswidth/2, 0])
424 cube([wingsize, wingswidth, wingthick]);
426 translate([0,0,-0.1])
427 CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2);
431 module ArmDoveClipPin(){ ////toplevel
432 DoveClipPin(h=doveclipheight);
435 module TowerDoveClipPin(){ ////toplevel
436 DoveClipPin(h=towercliph/2);
439 module Hub(){ ////toplevel
440 axlerad = hubaxlerad + slop;
441 xmin = axlerad+hublwidth/2;
442 xmax = hubbigrad-hublwidth/2;
443 hole = hubeffrad - hubbigrad - DoveClip_depth() - hublwidth*2;
444 holewidth = DoveClipPairSane_width() - hubstemwidth*2;
445 nondove_allwidth = nondove_armhole_wall*2 + totalwidth;
449 cylinder($fn=60, h=hublthick, r=hubbigrad);
451 cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
453 cylinder(h=hubaxlelen, r=axlerad+hublwidth);
454 for (ang=[0 : 360/num_arms : 359])
458 translate([hubeffrad,0,0])
459 DoveClipPairSane(h=doveclipheight,
460 baseextend = (hubeffrad - DoveClip_depth()
461 - hubbigrad + hublwidth));
462 if (hole>hublwidth && holewidth > 2) {
463 translate([hubbigrad + hublwidth, -holewidth/2, -1])
464 cube([hole, holewidth, hublthick+2]);
472 cube([hubeffrad + nondove_armhole_x
473 + nondove_armhole_hole/2 + nondove_armhole_support,
475 nondove_armhole_wall + totalheight]);
476 translate([hubeffrad - nondove_armhole_slop_x,
478 + nondove_armhole_wall - nondove_armhole_slop,
479 nondove_armhole_wall])
480 cube([nondove_armhole_x + 50,
481 totalwidth + nondove_armhole_slop*2,
483 translate([hubeffrad + nondove_armhole_x, 0, -20])
484 cylinder(r= nondove_armhole_hole/2, h=50, $fn=10);
488 for (ang = [0 : 180/num_arms : 359])
489 rotate([0,0,ang]) rotate([90,0,0]) {
490 translate([0,0,-hublwidth/2])
491 linear_extrude(height=hublwidth)
492 polygon([[xmin,0.05], [xmax,0.05],
493 [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
496 translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
500 module ArmExtender(){ ////toplevel
501 DoveClipExtender(length=exteffrad-hubeffrad,
506 module FsAxlePin(){ ////toplevel
507 AxlePin(hubaxlerad, washerrad*2, axlepinrad, axlepintabrad, slop);
510 module Axle(){ ////toplevel
511 pillarswidth = DoveClipPairSane_width(towerclipcount);
513 rotate([0,0, -( axleaxlefudgebend + atan(slop/hubaxlelen) ) ])
514 translate([-axlehorizoffset, -axlevertheight, 0]) {
515 rotate([0,0,-axletowerfudgebend])
517 DoveClipPairSane(h=towercliph, count=towerclipcount, baseextend=3);
518 translate([0, DoveClip_depth(), 0])
520 ExtenderPillars(axlevertheight - DoveClip_depth(),
521 pillarswidth, towercliph,
522 pillarw=towerpillarw);
525 axleclearlen = hubaxlelen + slop*4 + washerthick*2 + axlepadlen;
526 axlerad = hubaxlerad-slop;
527 bump = axlerad * 0.2;
528 shift = axlerad-bump;
532 translate([0, 0, shift]) {
535 translate([-1, 0, 0])
539 h = 1 + axleclearlen + axlepinrad*2 + 2);
540 mirror([1,0,0]) rotate([0,90,0])
541 cylinder(r = axlerad*1.75, h = 3);
544 translate([axlehorizoffset - pillarswidth/2, 0, 0])
547 r = towercliph - shift,
549 translate([-50, -joinbelowallow, -50])
550 cube([100, joinbelowallow+50, 100]);
554 translate([axleclearlen + axlepinrad/2, 0, -25])
555 cylinder(r = axlepinrad + slop, h=50);
558 translate([-50,-50,0]) cube([100,100,100]);
562 module washer(thick){
563 Washer(hubaxlerad, washerrad, thick, slop);
566 module AxleWasher(){ ////toplevel
567 washer(thick=washerthick);
570 module AxleThinWasher(){ ////toplevel
571 washer(thick=washerthinthick);
574 module AxleVeryThinWasher(){ ////toplevel
575 washer(thick=washerverythinthick);
578 module AxleFrictionWasher(){ ////toplevel
580 cylinder(h=washerthick, r=washerrad);
581 translate([0,0,-1]) cylinder(h=washerthick+2, r=hubaxlerad+slop);
584 frarmw = frictionwasherarmwidth;
585 frarmpawlr = hublwidth;
586 frarmpawlpush = slop*4 + frictionwasherextrapush;
587 for (ang=[0,180]) rotate([0,0,ang]) {
588 translate([washerrad-1, -frarmw/2, 0])
589 cube([frarmr - washerrad + 1, frarmw, washerthick]);
591 translate([frarmr - frarmpawlr, -50, 0])
592 cube([frarmpawlr, 100, 50]);
594 cylinder(h = 50, r = frarmpawlpush, $fn=36);
599 module TowerExtender(){ ////toplevel
600 l = totalheightfromtower - axlevertheight;
601 echo("TowerExtender",l);
602 DoveClipExtender(length = l,
603 ha = towercliph, hb = towercliph,
604 counta = towerclipcount, countb = towerclipcount,
605 pillarw = towerpillarw);
608 module FilamentCupPair(){ ////toplevel
610 translate([cupheight + prongthick*3,
613 rotate([0,0,180]) FilamentCup();
616 //----- storarm -----
619 storarm_hookheight = 5;
621 storarm_axleslop = 4;
624 storarm_base_h = 100;
626 storarm_base_mind = 2;
628 storarm_cope_hubaxle_mk1 = true;
630 storarm_screw_hole = 4;
631 storarm_screw_hole_slop = 0.5;
632 storarm_besides_hole = 4;
634 storarm_under_hole = 5;
635 storarm_screw_hole_head = 8.8;
636 storarm_screw_hole_head_slop = 1.5;
640 storarm_axlerad = hubaxlerad - storarm_axleslop;
641 storarm_mainlen = hubaxlelen*2 + storarm_axleslop
642 + (storarm_cope_hubaxle_mk1 ? 10 : 0);
643 storarm_totlen = storarm_mainlen + storarm_hooklen;
645 storarm_mid_off_y = storarm_axlerad;
647 storarm_base_off_y = storarm_mid_off_y + storarm_base_h/2;
649 module StorageArmDiagPartSide(xmin, xmax){
651 yuse = storarm_thick/2;
654 translate([xmin-1, -storarm_axlerad, storarm_thick/2])
656 cylinder(r=storarm_axlerad, h=xsz+2, $fn=60);
657 translate([xmin, -yuse, 0])
658 cube([xsz, yuse, storarm_thick]);
662 module StorageArmDiagPart(xmin, xmax, shear, adjbot){
664 StorageArmDiagPartSide(xmin,xmax);
666 multmatrix([[1,0,0,0],
670 translate([0, -storarm_axlerad*2 + adjbot, 0])
672 StorageArmDiagPartSide(xmin,xmax);
676 module StorageArmBaseTemplate(){
677 square([storarm_base_w, storarm_base_h]);
680 module StorageArmAtMountingHoles(){
681 bes = storarm_besides_hole + storarm_screw_hole;
684 x1 = storarm_base_w-bes;
685 y1 = storarm_base_h - bes;
692 translate([pos[0] - storarm_base_w,
693 pos[1] - storarm_base_off_y, -storarm_base_d])
698 module StorageArmRight(){ ////toplevel
699 shear = storarm_hookheight / (storarm_mainlen/2);
701 StorageArmDiagPart(-1, storarm_mainlen/2+1, shear, 0);
702 StorageArmDiagPart(storarm_mainlen/2-1, storarm_mainlen+1, shear/2,
703 storarm_hookheight/2);
705 translate([0, storarm_hookheight, 0])
706 StorageArmDiagPart(storarm_mainlen, storarm_totlen,
707 shear/2, -storarm_hookheight/2);
712 translate([-storarm_base_d, -storarm_base_off_y, storarm_base_w])
714 linear_extrude(height=storarm_base_mind)
715 StorageArmBaseTemplate();
716 StorageArmDiagPart(-1, 0, shear, 0);
718 StorageArmAtMountingHoles(){
719 cylinder(r= storarm_screw_hole_head/2,
723 StorageArmAtMountingHoles(){
725 cylinder(r= (storarm_screw_hole + storarm_screw_hole_slop)/2 ,
727 translate([0,0,storarm_under_hole])
728 cylinder(r= (storarm_screw_hole_head + storarm_screw_hole_head_slop)/2,
734 module StorageArmLeft(){ ////toplevel
735 mirror([1,0,0]) StorageArmRight();
738 module StorArmHoleTest(){ ////toplevel
739 sz = storarm_screw_hole_head + storarm_besides_hole*2;
742 translate([-50, -storarm_base_off_y, -1])
743 cube([100, sz, sz+1]);
748 //----- filament guide spacer -----
751 guide_armwidth = 10.2;
752 guide_armcorelen = 25.0;
753 guide_clipcirclethick = 10.0;
755 guidefilclip_outerdia = 22.8;
757 guidespacer_armslop = 0.75;
758 guidespacer_armlenslop = 1.05;
760 guidespacer_prongprotrude = 4;
761 guidespacer_thick = 1.6;
765 guidespacer_armdia = guide_armdia + guidespacer_armslop;
766 guidespacer_armwidth = guide_armwidth + guidespacer_armslop;
767 guidespacer_len = guide_armcorelen - guide_clipcirclethick
768 + guidespacer_armlenslop;
770 guidespacer_wingheight = (guidefilclip_outerdia - guidespacer_armdia)/2;
772 module FilamentGuideArmTemplate(extra=0){
774 circle(r= (guidespacer_armdia/2) + extra);
775 square(center=true, [guidespacer_armwidth+extra*2,
776 guidespacer_armdia + extra*2 + 10]);
780 module FilamentGuideSpacerInnerTemplate(){
781 FilamentGuideArmTemplate();
782 translate([0, -guidespacer_armdia/2])
783 square(center=true, [guidespacer_armwidth - guidespacer_prongprotrude,
784 guidespacer_armdia]);
787 module FilamentGuideSpacer(){ ////toplevel
790 linear_extrude(height= guidespacer_len)
791 FilamentGuideArmTemplate(extra= guidespacer_thick);
792 for (angle=[26, 60]) {
795 rotate([0,0,angle]) {
797 for (t=[[0, guidespacer_wingheight],
798 [guidespacer_len-1, -guidespacer_wingheight]])
799 translate([0,0, t[0] + 0.5])
800 cube([guidespacer_thick, guidespacer_armdia + t[1]*2,
810 linear_extrude(height= guidespacer_len+5)
811 FilamentGuideSpacerInnerTemplate();
816 //----- replacement filament guide arm for TAZ-5 -----
818 guidearm_armslop = 0.25;
819 guidearm_armlenslop = 0.25;
821 guidearm_hookprotr = 3;
822 guidearm_hookprotrflat = 1;
823 guidearm_hookslope = 0.3;
825 guidearm_totallen = 60;
827 guidearm_screwplatesz = 12;
828 guidearm_screwplateth = 4;
829 guidearm_screwplatewd = 15;
830 guidearm_screwhole = 5 + 0.5;
832 guidearm_bendlen = 40;
833 guidearm_bendslot = 4.5;
835 guidearm_stopthick = 4;
836 guidearm_protrslop = 1.0;
840 guidearm_armdia = guide_armdia - guidearm_armslop;
841 guidearm_armwidth = guide_armwidth - guidearm_armslop;
842 guidearm_armcorelen = guide_armcorelen + guidearm_armlenslop;
844 guidearm_base_z0 = -(guidearm_totallen - guidearm_armcorelen);
846 guidearm_realbendlen = min(guidearm_bendlen,
847 guidearm_totallen - guidearm_screwplateth - 0.1);
848 guidearm_slopelen = guidearm_hookprotr/guidearm_hookslope;
850 module FilamentGuideArmStop(h){
852 translate([ts * guidearm_hookprotr, 0,0])
853 cylinder(r=guidearm_armdia/2, h, $fn=80);
857 module FilamentGuideArmShaftPositive(){
858 r = guidearm_armdia/2;
860 translate([0,0, guidearm_base_z0+1])
861 cylinder(r=r, h= guidearm_totallen, $fn=80);
862 translate([0,0, guidearm_armcorelen]){
864 FilamentGuideArmStop(guidearm_hookprotrflat);
865 translate([0,0, guidearm_slopelen])
866 cylinder(r=r, h=guidearm_hookprotrflat, $fn=80);
870 FilamentGuideArmStop(guidearm_stopthick);
873 module FilamentGuideArmBase(){
875 (guidearm_screwplatewd - guidearm_armwidth)/2,
878 translate([0,0, guidearm_screwplateth/2])
880 [guidearm_armdia + guidearm_screwplatesz*2,
881 guidearm_screwplatewd,
882 guidearm_screwplateth]);
884 translate([ts * (guidearm_armdia/2 + guidearm_screwplatesz/2),
887 cylinder(r= guidearm_screwhole/2, h=40, $fn=20);
893 module FilamentGuideArm(){ ///toplevel
896 FilamentGuideArmShaftPositive();
897 translate([-guidearm_bendslot/2,
899 -guidearm_realbendlen + guidearm_armcorelen])
900 cube([guidearm_bendslot,
902 guidearm_realbendlen + 100]);
904 for (zx=[ [ 0, guidearm_bendslot ],
905 [ guidearm_armcorelen + guidearm_slopelen,
906 guidearm_hookprotr*2 + guidearm_protrslop ]
908 translate([-zx[1]/2, -50, zx[0]])
909 cube([zx[1], 100, 1]);
916 guidearm_totallen*3]);
918 FilamentGuideArmBase();
921 module FilamentGuideArmPrint(){ ////toplevel
926 module Demo(){ ////toplevel
927 translate([-real_exteffrad,-20,0]) Hub();
929 translate([ratchettooth*2, 30, 0]) FilamentCup();
941 //AxleFrictionWasher();
944 //FilamentGuideSpacer();
945 //FilamentGuideArm();
946 //FilamentGuideArmPrint();