4 include <commitid.scad>
10 ply_hole_dia_real = 12;
26 interlock_fine = 0.66;
28 interlock_fine_slope = 1.0;
29 interlock_fine_lenslop = 1.0;
35 leg_hole_dia = 5 + 0.75;
43 leg_fin_bot_flat_z = 5;
47 machine_rear_to_front = 84 + 0.25 - 1.4;
49 cutout_l_end_y_front_slop = 0.5;
50 cutout_l_end_y_rear_slop = 0.5;
53 cutout_l_end_y = machine_rear_to_front;
54 cutout_l_end_new_x_slop = 1.4 - 1.95;
55 cutout_l_end_y_total = cutout_l_end_y
56 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
58 tile02_tr = [-250, 0];
61 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
62 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
64 // front and rear curves
66 rearedge_len = 170 + 0.70;
69 rearcurve_strt_len = 52;
71 rearcurve_z_slop = -0.50;
73 rearcurve_avoid_y = 35;
75 rearcurve_double_inrad = 26.10 + 8.04;
81 frontcurve_side_skew = 3.5 / 72;
82 frontcurve_avoid_y = 70;
83 frontcurve_z_slop = 0.75;
85 frontcurve_strt_len = 50;
86 frontcurve_dualcurve_angle = 30;
88 teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ],
90 [ 190, -80 ], // do not change index of this one
91 [ 0, 70 ], [ 0, -35 ],
95 teststrap_peg = [7.5, 3.5];
97 ply_edge_hole_dist_real = 14;
104 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
106 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
108 hole_slop = (ply_hole_dia - post_dia)/2;
109 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
111 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
112 tile_hard_edge_hole_dist));
114 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
115 tile_hard_edge_hole_dist + round_edge_rad));
117 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
119 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
120 thehd_bl = -thehd_tr;
121 thehd_br = -thehd_tl;
123 tablet_z_slop = 1.00;
125 interlock_rad = interlock_dia/2;
126 interlock_negative_rad = interlock_rad + 0.125;
128 interlock_sq_adj = 0.2; // arbitrary
130 leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
131 pow(leg_fin_top_w/2,2) );
133 m4_define(`POST_TCROSSSZ',
134 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
140 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
141 translate([0,0, tile_th]) {
142 cylinder(r= screw_big_dia/2, h= screw_big_len);
143 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
148 translate([0,0, tile_th/2]) {
149 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
150 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
154 translate([0,0, tile_th/2]) {
155 cube([POST_TCROSSSZ, POST_TCROSSSZ, tile_th], center=true);
164 cylinder(r= post_dia/2 + jig_post_hole_slop, h=10);
165 translate([0,0, -jig_min_th])
166 cylinder(r= ply_hole_dia_real/2, h = 5);
167 for (rot=[0:90:270]) rotate(rot) {
168 translate([ ply_edge_hole_dist_real, 0, 0 ])
169 cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true);
174 module Posts(posts) {
176 translate(concat(p, [0]))
180 module PostHoles(posts) {
182 translate(concat(p, [0]))
187 module TileBase(botleft, topright){
188 size = topright - botleft;
189 botleft_post = botleft + thehd_tr;
190 topright_post = topright + thehd_bl;
193 translate(concat(botleft, [0]))
194 cube(concat(size, [tile_th]));
195 if (!(TEST || JIG)) {
196 cidsz = topright_post-botleft_post
197 + [-post_dia,-post_dia]
199 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
200 echo("CID",cidsz,cidszr);
201 translate( concat(botleft_post, [ -tile_th ])
202 + 0.5 * [ post_dia, post_dia, 0 ]
203 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
204 Commitid_BestCount_M(cidszr);
207 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
208 cidsz = [ thehd[0], size[1] - 2*crossoff ];
209 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
211 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
212 Commitid_BestCount(cidszr);
215 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
216 cube(concat(size - [test_edge,test_edge]*2, [tile_th*2]));
217 translate(concat(botleft_post, [-1]))
218 cube(concat(topright_post-botleft_post, [tile_th+2]));
220 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
223 cube(shufflesz, center=true);
226 translate([0,0,-20]) linear_extrude(height=20) {
227 for (diag=[[ +1, botleft ],
228 [ -1, [topright[0], botleft[1]] ]]) {
230 rotate(atan2(size[1], diag[0] * size[0]))
231 translate([0, -test_edge/2])
232 square([vectorlen2d(size), test_edge]);
242 m4_dnl c is from Rectangle_corners and
243 m4_dnl ix is a corner number
244 m4_dnl expands to two comma-separated corners:
245 m4_dnl that denoted by ix, and the next one anticlockwise
246 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
249 m4_dnl c is from Rectangle_corners and
250 m4_dnl ix is a corner number
251 m4_dnl expands to an array of corners as for RoundCorner
252 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
254 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
255 m4_define(`INREFFRAME',`
256 length_vec = ($2) - ($1);
257 length = dist2d([0,0], length_vec);
258 length_uvec = length_vec / length;
259 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
260 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
261 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
268 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
269 m4_dnl INREFFRAME_EDGE { body; }
270 m4_define(`INREFFRAME_EDGE',`
271 translate([0,0, -round_edge_rad])
274 module RoundEdge(left_cnr, right_cnr) {
275 INREFFRAME(left_cnr, right_cnr)
279 cylinder(r= round_edge_rad, h= length, $fn=50);
280 translate([-1, 0, -20])
281 cube([length+2, 20, 20]);
286 m4_define(`ROUNDCORNER_VARS',`
290 bigr= round_cnr_rad - round_edge_rad;
291 l_uvec = unitvector2d(left_cnr - this_cnr);
292 r_uvec = unitvector2d(right_cnr - this_cnr);
293 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
294 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
295 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
296 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
297 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
298 ctr3 = concat(ctr,[0])
301 module RoundCorner_selector(ci, adj) {
305 INREFFRAME(ctr3,concat(lp1,[4])){
306 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
307 translate([-bigr*2 + adj, -bigr])
308 square([bigr*2, bigr*3]);
313 INREFFRAME(ctr3,concat(lp4,[0])){
314 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
315 translate([-bigr*2, -bigr*2])
316 square([bigr*2 + adj, bigr*3]);
323 module RoundCornerCut(ci) {
324 // ci should be [this_cnr, right_cnr, left_cnr]
325 // where right_cnr is to the right (ie, anticlockwise)
328 RoundCorner_selector(ci, -0.1);
330 cylinder(center=true, h=20, r= bigr);
334 module RoundCornerAdd(ci) {
337 RoundCorner_selector(ci, +0.1);
340 rotate_extrude(convexity=10, $fn=50)
343 circle(r= round_edge_rad, $fn=50);
352 module InterlockLobePlan(negative) {
353 r = negative ? interlock_negative_rad : interlock_rad;
354 ymir = negative ? 0 : 1;
358 translate([thehd[0], 0]){
362 translate([-dx, -0.1])
363 square([ dx*2, r/2 + 0.1 ]);
365 translate([ xi*dx, r ])
373 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
374 for (lobei = [ 0 : nlobes-1 ]) {
375 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
376 translate([lobex, 0, 0]) {
377 InterlockLobePlan(negative);
383 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
384 mirror([0, negative])
385 translate([slotshorter, iadj])
386 square([length - slotshorter*2, interlock_fine + iadj*2]);
390 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
391 plusth = negative * 1.0;
392 protr = interlock_fine + interlock_sq_adj;
395 z1 = -tile_th/2 - protr / interlock_fine_slope;
396 z3 = -tile_th/2 + protr / interlock_fine_slope;
398 negsign = negative ? -1 : +1;
399 yprotr = negsign * protr;
401 INREFFRAME(left_cnr, right_cnr) {
402 for (vsect = [ // zs0 zs1 ys0, ys1
403 [ -tile_th-plusth, plusth, 0, 0],
404 [ z1, z2, 0, yprotr],
405 [ z2, z3, yprotr, 0],
415 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
419 linear_extrude(height=zsd, convexity=10)
420 InterlockEdgePlan(negative, nlobes, length, !!ysd);
425 function TestPiece_holes2corners(holes) =
426 [ holes[0] + thehd_bl,
429 holes[0] + thehd_tl ];
431 module TestPiece1(){ ////toplevel
435 corners = TestPiece_holes2corners(holes);
436 rcs = R_CNR(corners,0);
439 TileBase(corners[0], corners[2]);
441 RoundEdge(corners[0], corners[1]);
442 RoundEdge(corners[3], corners[0]);
444 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
451 module TestPiece2(){ ////toplevel
455 corners = TestPiece_holes2corners(holes);
458 TileBase(corners[0], corners[2]);
460 RoundEdge(corners[0], corners[1]);
461 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
467 module TestDemo(){ ////toplevel
468 translate([ -thehd[0], 0 ])
471 translate([ +thehd[0] + demo_slop, 0 ])
475 module Machine_NewRearProfile(){
476 // figures copied out of xfig edit boxes
477 // best not to edit the posbox size if poss - just move it
478 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
479 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
480 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
481 scaleline_mm = 12+5+10+5+3;
482 sh = -[abs(posbox[0]), abs(posbox[1])];
483 rot = atan2(-sideline[0], sideline[1]);
484 sc = scaleline_mm / scaleline;
485 //echo("SH",sh,rot,sc);
486 scale(sc) rotate(rot) translate(sh){
487 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
491 module Machine_NewFrontProfile(){
492 // figures copied out of xfig edit boxes
493 // best not to edit the posbox size if poss - just move it
494 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
495 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
496 refline_mm = (11-1)*10;
497 sh = -[abs(posbox[0]), abs(posbox[1])];
498 rot = atan2(-refline[0], refline[1]);
499 sc = refline_mm / vectorlen2d(refline);
500 //echo("SH",sh,rot,sc);
501 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
502 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
506 module Machine_NewEndProfile(){
507 // figures copied out of xfig edit boxes
508 // NB that y coords are reversed - xfig origin is at bottom left
509 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
510 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
511 refline_mm = 10 * (11 - 2.5);
512 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
513 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
514 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
518 posbox = [min(posboxs[0][0],posboxs[1][0]),
519 max(posboxs[0][1],posboxs[1][1])];
521 m4_define(`MNEP_ELP',
522 `line_intersection_2d(baseline[0],baseline[1],
523 sidelines[$1][0],sidelines[$1][1])')
524 endline = [MNEP_ELP(0),MNEP_ELP(1)];
526 rot = atan2(-refline[1], -refline[0]);
527 sc = refline_mm / vectorlen2d(refline);
528 sh = (0.5 * (endline[0] + endline[1])) - posbox;
530 ellen = sc * dist2d(endline[0],endline[1]);
531 scy = cutout_l_end_y_total / ellen;
533 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
536 //%translate(1 * (posboxs[0] - posbox)) square(50);
537 //%translate(1 * (posboxs[1] - posbox)) square(50);
538 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
540 // %translate(1 * (endline[0] - posbox)) square([50,10]);
541 // %translate(1 * (endline[1] - posbox)) square([50,10]);
543 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
544 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
545 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
546 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
549 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
553 module Machine_NewEndProfileDemo(){ ////toplevel
554 translate([0,5,0]) Machine_NewEndProfile();
555 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
557 translate([0,5, 0]) Machine_NewEndProfile();
558 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
562 module Machine_NewArm(){
563 translate([0,0,-30]) linear_extrude(height=60) {
564 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
565 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
569 translate([0,d]) Machine_NewEndProfile();
576 module Machine_NewRearCurve(){
577 slant = atan2(4,210-10);
579 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
580 translate([ rearcurve_double_inrad,
582 -rearcurve_double_inrad + 10 ]){
583 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
585 Machine_NewRearProfile();
586 translate([0,-100]) Machine_NewRearProfile();
590 rotate([0,90,0]) rotate([90,0,0]) {
592 rotate_extrude(convexity=10, $fn=64)
594 translate([ 0, -rearcurve_double_inrad ])
595 Machine_NewRearProfile();
596 translate([0,0,-500])
597 cube([500,500,1000]);
600 translate([1,0,-rearcurve_double_inrad])
601 rotate([0,-90,0]) rotate([0,0,-90])
602 linear_extrude(height= rearcurve_strt_len + 1)
603 Machine_NewRearProfile();
607 module Machine_Curves(){ ////toplevel
608 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
612 translate([ -reartablet_x,
614 -reartablet_z + tablet_z_slop])
616 cube([ reartablet_x+1,
620 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
622 frontcurve_z_slop ]){
623 translate([0, -machine_rear_to_front, 0])
624 multmatrix([[1, -frontcurve_side_skew, 0, 0],
628 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
629 linear_extrude(height= 200)
630 Machine_NewFrontProfile();
632 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
634 frontcurve_z_slop ]){
635 translate([ rearcurve_strt_len,
638 Machine_NewRearCurve();
643 module TestStrapSlots(){
644 pegwidth = teststrap_peg[0];
645 for (pos = teststrapslots_at) {
647 translate(concat(pos,[0]))
648 for (mx = [0,1]) mirror([mx,0,0]) {
649 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
650 cube(concat(teststrap,[40]));
655 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
657 module TestStrapPeg_Short(){ ////toplevel
658 TestStrapPeg_any(35);
661 module TestStrapPeg_Long(){ ////toplevel
662 TestStrapPeg_any(60);
665 module Machine(){ ////toplevel
672 module MachineEnvelope(){
674 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
675 y_arm_t = cutout_tile11_y;
676 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
677 y_crv_b = y_arm_t + rearcurve_avoid_y;
679 translate([0,0,-50]) linear_extrude(height= 100){
680 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
681 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
685 module Leg(){ ////toplevel
690 cylinder(r= leg_big_dia/2, height=leg_top_flat_z, $fn=100);
691 translate([0,0, -leg_height])
692 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
694 for (rot=[0:90:270]) rotate(rot) {
696 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
697 cube([ leg_fin_top_rad - 0.1,
701 translate([0, -leg_fin_bot_w/2, -leg_height])
702 cube([ leg_fin_bot_rad,
704 leg_fin_bot_flat_z ]);
708 mirror([0,0,1]) translate([0,0,-1])
709 cylinder(r= leg_hole_dia/2, h=leg_height+2, $fn=30);
713 function Rectangle_corners(c0, sz) =
714 // returns the corners of a rectangle from c0 to c0+sz
715 // if sz is positive, the corners are anticlockwise starting with c0
718 c0 + [ sz[0], sz[1] ],
721 function Rectangle_corners2posts(c) =
727 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
729 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
731 module Tile02(){ ////toplevel
733 c0 = tile02_tr + -sz;
734 c = Rectangle_corners(c0, sz);
735 posts = Rectangle_corners2posts(c);
739 Rectangle_TileBase(c);
741 RoundEdge(R_EDGE(c,0));
742 RoundEdge(R_EDGE(c,3));
743 InterlockEdge(R_EDGE(c,2), 0);
745 InterlockEdge(R_EDGE(c,1), 1);
752 module Tile12(){ ////toplevel
754 c0 = tile02_tr + [-sz[0], 0];
755 c = Rectangle_corners(c0, sz);
756 posts = Rectangle_corners2posts(c);
760 Rectangle_TileBase(c);
762 RoundEdge(R_EDGE(c,2));
763 RoundEdge(R_EDGE(c,3));
765 InterlockEdge(R_EDGE(c,0), 1);
766 InterlockEdge(R_EDGE(c,1), 1);
773 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
774 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
775 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
777 module Tile11(){ ////toplevel
779 c0 = tile01_tr + [-sz[0],0];
780 c = Rectangle_corners(c0, sz);
781 cnr_posts = Rectangle_corners2posts(c);
783 Posts_interpolate_one(cnr_posts[0],
784 cnr_posts[1] - [cutout_l_end_x, 0]),
785 [ cnr_posts[1] + [0, cutout_tile11_y],
791 Rectangle_TileBase(c);
793 RoundEdge(R_EDGE(c,2));
794 InterlockEdge(R_EDGE(c,3));
796 InterlockEdge(c[0], tile_01_11_cnr, 1);
797 InterlockEdge(tile_11_10_cnr, c[2], 1);
803 module Tile01(){ ////toplevel
805 c0 = tile01_tr + -sz;
806 c = Rectangle_corners(c0, sz);
807 cnr_posts = Rectangle_corners2posts(c);
809 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
810 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
811 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
816 Rectangle_TileBase(c);
818 RoundEdge(R_EDGE(c,0));
819 InterlockEdge(tile_01_11_cnr, c[3]);
820 InterlockEdge(R_EDGE(c,3));
823 InterlockEdge(c[1], tile_01_00_cnr, 1);
828 module Tile10(){ ////toplevel
830 c0 = tile01_tr + [0,0];
831 c = Rectangle_corners(c0, sz);
832 cnr_posts = Rectangle_corners2posts(c);
833 cty = cutout_tile11_y;
834 rcy = cty + rearcurve_avoid_y;
835 posts = [ cnr_posts[0] + [ 0, cty ],
836 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
837 cnr_posts[1] + [ 0, rcy ],
843 Rectangle_TileBase(c);
845 RoundEdge(R_EDGE(c,1));
846 RoundEdge(R_EDGE(c,2));
847 InterlockEdge(c[3], tile_11_10_cnr);
856 module Tile00(){ ////toplevel
858 c0 = tile01_tr + [0,-sz[1]];
859 c = Rectangle_corners(c0, sz);
861 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
862 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
865 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
867 cnr_posts = Rectangle_corners2posts(c);
868 cty = cutout_tile01_y;
869 rcy = cty + frontcurve_avoid_y;
870 posts = [ cnr_posts[0],
872 0.5 * (cnr_posts[0] + cnr_posts[1]),
873 cnr_posts[2] + [ 0, -rcy ],
874 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
875 cnr_posts[3] + [ 0, -cty ]
878 rc2 = [c1bis,c2bis,c[1]];
883 Rectangle_TileBase(c);
885 RoundEdge(R_EDGE(c,0));
886 RoundEdge(c[1], c1bis);
887 InterlockEdge(tile_01_00_cnr, c[0]);
890 translate([0,0,-20]) linear_extrude(height=40) {
891 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
894 RoundEdge(c1bis, c2bis);
904 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
905 c = Rectangle_corners(c0, sz);
907 bsz = sz + [bracexx,0,0];
910 Rectangle_TileBase(c);
912 translate(concat(c0, [-brace[2] + 0.1])){
914 cube(concat(bsz, [brace[2]]) - [5,0,0]);
915 translate(brace + [0,0, -25])
916 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
920 RoundEdge(R_EDGE(c,1));
926 module FitTest_PairLink(cut=false){ ////toplevel
927 cy0=-55; cy1=85; cx=132;
930 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
936 straphole_x_max = legrad/sqrt(2) + footrad_max;
937 dz = cut ? adj_neg_slop : 0;
939 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
940 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
942 for (endy=[cy0,cy1]) {
944 translate([cx,endy,dz]){
946 for (rot=[45:90:315]) rotate(rot) {
947 translate([legrad,0,0]){
949 cylinder(r= footrad_max, h=1);
950 translate([0,0,-footrad_depth])
951 cylinder(r= footrad_min, h=1);
955 cylinder(r= footrad_min +
956 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
961 for (rot=[45,135]) rotate(rot) {
964 translate([s*legrad,0,0])
965 cylinder(r= footrad_max, h=bar[1]);
971 for (rot=[0,180]) rotate(rot) {
972 translate([ straphole_x_max - strap[0]/2, 0,0 ])
973 cube(concat(strap,[20]), center=true);
980 module FitTest_RearCurve(){ ////toplevel
982 FitTest_general([100,0], [180,100]);
983 FitTest_PairLink(true);
988 module FitTest_FrontCurve(){ ////toplevel
994 translate([0,0,-8]) linear_extrude(height=18) {
995 translate(p0) square(sz);
996 translate(teststrapslots_at[3])
997 scale(2* [ teststrap_peg[0], teststrap[1] ])
1001 FitTest_PairLink(true);
1006 module FitTest_Entire(){ ////toplevel
1009 szfront = [243,szrear[1]];
1011 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1012 FitTest_PairLink(true);
1013 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1014 cube([100, -p0[1], 80]);
1018 FitTest_RearCurve();
1019 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1021 FitTest_FrontCurve();
1024 module FitTest_EntireDemo(){ ////toplevel
1029 module FitTest_EndEnd(){ ////toplevel
1032 sz2 = [136,68] - p0;
1034 FitTest_general(p0, sz);
1035 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1036 cube([ sz2[0] +1, 50, 20 ]);
1040 module FitTest_PairDemo(){ ////toplevel
1044 %FitTest_FrontCurve();
1045 %FitTest_RearCurve();
1051 FitTest_FrontCurve();
1052 FitTest_RearCurve();
1054 #FitTest_PairLink(true);
1060 module RoundCornerDemo_plat(cnr){
1061 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1064 module RoundCornerDemo(){ ////toplevel
1065 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1066 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1067 translate([25,0,0]) RoundCornerAdd(cnr);
1068 translate([-25,0,0]) RoundCornerCut(cnr);
1069 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1071 RoundCornerDemo_plat(cnr);
1072 RoundCornerCut(cnr);
1074 RoundCornerAdd(cnr);
1077 module Demo(){ ////toplevel
1078 translate(demo_slop*[-2,1]) color("blue") Tile12();
1079 translate(demo_slop*[-2,0]) color("red") Tile02();
1080 translate(demo_slop*[-2,1]) color("orange") Tile11();
1081 translate(demo_slop*[-2,0]) color("purple") Tile01();
1082 translate(demo_slop*[-3,1]) color("blue") Tile10();
1083 translate(demo_slop*[-3,0]) color("red") Tile00();
1085 // Can also do this, to print reference sheet:
1086 // load this into openscad
1087 // select Ctrl-4 view, view all, scale appropriately
1088 // import sewing-table,Demo-flat.png
1089 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1097 //Machine_NewRearProfile();
1098 //Machine_NewRearCurve();
1099 //Machine_NewFrontProfile();
1100 //Machine_NewEndProfile();
1101 //Machine_NewEndProfileDemo();
1105 //MachineEnvelope();