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;
33 leg_height = 53.75 - 0.95;
35 leg_hole_dia = 5 + 0.75;
48 leg_fin_bot_flat_z = 5;
56 spacer_ext_slop = 0.25;
57 spacer_int_slop = 0.25;
62 machine_rear_to_front = 84 + 0.25 - 1.4;
64 cutout_l_end_y_front_slop = 0.5;
65 cutout_l_end_y_rear_slop = 0.5;
68 cutout_l_end_y = machine_rear_to_front;
69 cutout_l_end_new_x_slop = 1.4 - 1.95;
70 cutout_l_end_y_total = cutout_l_end_y
71 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
73 tile02_tr = [-250, 0];
76 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
77 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
79 // front and rear curves
81 rearedge_len = 170 + 0.70;
84 rearcurve_strt_len = 52;
86 rearcurve_z_slop = -0.50;
88 rearcurve_avoid_y = 35;
90 rearcurve_double_inrad = 26.10 + 8.04;
96 frontcurve_side_skew = 3.5 / 72;
97 frontcurve_avoid_y = 70;
98 frontcurve_z_slop = 0.75;
100 frontcurve_strt_len = 50;
101 frontcurve_dualcurve_angle = 30;
103 teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ],
105 [ 190, -80 ], // do not change index of this one
106 [ 0, 70 ], [ 0, -35 ],
109 teststrap = [ 3, 5 ];
110 teststrap_peg = [7.5, 3.5];
112 ply_edge_hole_dist_real = 14;
119 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
121 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
123 hole_slop = (ply_hole_dia - post_dia)/2;
124 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
126 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
127 tile_hard_edge_hole_dist));
129 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
130 tile_hard_edge_hole_dist + round_edge_rad));
132 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
134 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
135 thehd_bl = -thehd_tr;
136 thehd_br = -thehd_tl;
138 tablet_z_slop = 1.00;
140 interlock_rad = interlock_dia/2;
141 interlock_negative_rad = interlock_rad + 0.125;
143 interlock_sq_adj = 0.2; // arbitrary
145 leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
146 pow(leg_fin_top_w/2,2) );
148 leg_tubule_pos_rad = leg_big_dia/2 * 0.6;
150 m4_define(`POST_TCROSSSZ',
151 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
157 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
158 translate([0,0, tile_th]) {
159 cylinder(r= screw_big_dia/2, h= screw_big_len);
160 cylinder(r= $screw_dia/2, h= ply_th, $fn=20);
165 translate([0,0, tile_th/2]) {
166 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
167 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
171 translate([0,0, tile_th/2]) {
172 cube([POST_TCROSSSZ, POST_TCROSSSZ, tile_th], center=true);
181 cylinder(r= post_dia/2 + jig_post_hole_slop, h=10);
182 translate([0,0, -jig_min_th])
183 cylinder(r= ply_hole_dia_real/2, h = 5);
184 for (rot=[0:90:270]) rotate(rot) {
185 translate([ ply_edge_hole_dist_real, 0, 0 ])
186 cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true);
191 module Posts(posts) {
193 translate(concat(p, [0]))
197 module PostHoles(posts) {
199 translate(concat(p, [0]))
204 module TileBase(botleft, topright){
205 size = topright - botleft;
206 botleft_post = botleft + thehd_tr;
207 topright_post = topright + thehd_bl;
210 translate(concat(botleft, [0]))
211 cube(concat(size, [tile_th]));
212 if (!(TEST || JIG)) {
213 cidsz = topright_post-botleft_post
214 + [-post_dia,-post_dia]
216 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
217 echo("CID",cidsz,cidszr);
218 translate( concat(botleft_post, [ -tile_th ])
219 + 0.5 * [ post_dia, post_dia, 0 ]
220 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
221 Commitid_BestCount_M(cidszr);
224 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
225 cidsz = [ thehd[0], size[1] - 2*crossoff ];
226 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
228 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
229 Commitid_BestCount(cidszr);
232 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
233 cube(concat(size - [test_edge,test_edge]*2, [tile_th*2]));
234 translate(concat(botleft_post, [-1]))
235 cube(concat(topright_post-botleft_post, [tile_th+2]));
237 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
240 cube(shufflesz, center=true);
243 translate([0,0,-20]) linear_extrude(height=20) {
244 for (diag=[[ +1, botleft ],
245 [ -1, [topright[0], botleft[1]] ]]) {
247 rotate(atan2(size[1], diag[0] * size[0]))
248 translate([0, -test_edge/2])
249 square([vectorlen2d(size), test_edge]);
259 m4_dnl c is from Rectangle_corners and
260 m4_dnl ix is a corner number
261 m4_dnl expands to two comma-separated corners:
262 m4_dnl that denoted by ix, and the next one anticlockwise
263 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
266 m4_dnl c is from Rectangle_corners and
267 m4_dnl ix is a corner number
268 m4_dnl expands to an array of corners as for RoundCorner
269 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
271 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
272 m4_define(`INREFFRAME',`
273 length_vec = ($2) - ($1);
274 length = dist2d([0,0], length_vec);
275 length_uvec = length_vec / length;
276 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
277 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
278 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
285 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
286 m4_dnl INREFFRAME_EDGE { body; }
287 m4_define(`INREFFRAME_EDGE',`
288 translate([0,0, -round_edge_rad])
291 module RoundEdge(left_cnr, right_cnr) {
292 INREFFRAME(left_cnr, right_cnr)
296 cylinder(r= round_edge_rad, h= length, $fn=50);
297 translate([-1, 0, -20])
298 cube([length+2, 20, 20]);
303 m4_define(`ROUNDCORNER_VARS',`
307 bigr= round_cnr_rad - round_edge_rad;
308 l_uvec = unitvector2d(left_cnr - this_cnr);
309 r_uvec = unitvector2d(right_cnr - this_cnr);
310 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
311 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
312 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
313 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
314 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
315 ctr3 = concat(ctr,[0])
318 module RoundCorner_selector(ci, adj) {
322 INREFFRAME(ctr3,concat(lp1,[4])){
323 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
324 translate([-bigr*2 + adj, -bigr])
325 square([bigr*2, bigr*3]);
330 INREFFRAME(ctr3,concat(lp4,[0])){
331 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
332 translate([-bigr*2, -bigr*2])
333 square([bigr*2 + adj, bigr*3]);
340 module RoundCornerCut(ci) {
341 // ci should be [this_cnr, right_cnr, left_cnr]
342 // where right_cnr is to the right (ie, anticlockwise)
345 RoundCorner_selector(ci, -0.1);
347 cylinder(center=true, h=20, r= bigr);
351 module RoundCornerAdd(ci) {
354 RoundCorner_selector(ci, +0.1);
357 rotate_extrude(convexity=10, $fn=50)
360 circle(r= round_edge_rad, $fn=50);
369 module InterlockLobePlan(negative) {
370 r = negative ? interlock_negative_rad : interlock_rad;
371 ymir = negative ? 0 : 1;
375 translate([thehd[0], 0]){
379 translate([-dx, -0.1])
380 square([ dx*2, r/2 + 0.1 ]);
382 translate([ xi*dx, r ])
390 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
391 for (lobei = [ 0 : nlobes-1 ]) {
392 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
393 translate([lobex, 0, 0]) {
394 InterlockLobePlan(negative);
400 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
401 mirror([0, negative])
402 translate([slotshorter, iadj])
403 square([length - slotshorter*2, interlock_fine + iadj*2]);
407 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
408 plusth = negative * 1.0;
409 protr = interlock_fine + interlock_sq_adj;
412 z1 = -tile_th/2 - protr / interlock_fine_slope;
413 z3 = -tile_th/2 + protr / interlock_fine_slope;
415 negsign = negative ? -1 : +1;
416 yprotr = negsign * protr;
418 INREFFRAME(left_cnr, right_cnr) {
419 for (vsect = [ // zs0 zs1 ys0, ys1
420 [ -tile_th-plusth, plusth, 0, 0],
421 [ z1, z2, 0, yprotr],
422 [ z2, z3, yprotr, 0],
432 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
436 linear_extrude(height=zsd, convexity=10)
437 InterlockEdgePlan(negative, nlobes, length, !!ysd);
442 function TestPiece_holes2corners(holes) =
443 [ holes[0] + thehd_bl,
446 holes[0] + thehd_tl ];
448 module TestPiece1(){ ////toplevel
452 corners = TestPiece_holes2corners(holes);
453 rcs = R_CNR(corners,0);
456 TileBase(corners[0], corners[2]);
458 RoundEdge(corners[0], corners[1]);
459 RoundEdge(corners[3], corners[0]);
461 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
468 module TestPiece2(){ ////toplevel
472 corners = TestPiece_holes2corners(holes);
475 TileBase(corners[0], corners[2]);
477 RoundEdge(corners[0], corners[1]);
478 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
484 module TestDemo(){ ////toplevel
485 translate([ -thehd[0], 0 ])
488 translate([ +thehd[0] + demo_slop, 0 ])
492 module PostTestPiece(){ ////toplevel
493 hole_sizes = [2.8, 3.0, 3.1, 3.134, 3.168, 3.2, 3.3, 3.5];
494 nholes = len(hole_sizes)*2;
496 stride = post_dia*1.5;
497 rect_sz = stride * [ nrows,
498 ceil(nholes/nrows) ];
499 corners = Rectangle_corners(-stride * 0.5 * [1,1], rect_sz);
502 TileBase(corners[0], corners[2]);
503 RoundEdge(corners[0], corners[1]);
504 for (i= [ 0: nholes-1 ]) {
505 $screw_dia = hole_sizes[ floor(i/2) ];
506 translate(stride * [ (nrows-1) - (i % nrows),
513 translate([post_dia/2, -post_dia/2, 1])
514 cube([1, post_dia * (i / nholes), tile_th]);
521 module Machine_NewRearProfile(){
522 // figures copied out of xfig edit boxes
523 // best not to edit the posbox size if poss - just move it
524 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
525 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
526 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
527 scaleline_mm = 12+5+10+5+3;
528 sh = -[abs(posbox[0]), abs(posbox[1])];
529 rot = atan2(-sideline[0], sideline[1]);
530 sc = scaleline_mm / scaleline;
531 //echo("SH",sh,rot,sc);
532 scale(sc) rotate(rot) translate(sh){
533 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
537 module Machine_NewFrontProfile(){
538 // figures copied out of xfig edit boxes
539 // best not to edit the posbox size if poss - just move it
540 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
541 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
542 refline_mm = (11-1)*10;
543 sh = -[abs(posbox[0]), abs(posbox[1])];
544 rot = atan2(-refline[0], refline[1]);
545 sc = refline_mm / vectorlen2d(refline);
546 //echo("SH",sh,rot,sc);
547 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
548 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
552 module Machine_NewEndProfile(){
553 // figures copied out of xfig edit boxes
554 // NB that y coords are reversed - xfig origin is at bottom left
555 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
556 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
557 refline_mm = 10 * (11 - 2.5);
558 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
559 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
560 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
564 posbox = [min(posboxs[0][0],posboxs[1][0]),
565 max(posboxs[0][1],posboxs[1][1])];
567 m4_define(`MNEP_ELP',
568 `line_intersection_2d(baseline[0],baseline[1],
569 sidelines[$1][0],sidelines[$1][1])')
570 endline = [MNEP_ELP(0),MNEP_ELP(1)];
572 rot = atan2(-refline[1], -refline[0]);
573 sc = refline_mm / vectorlen2d(refline);
574 sh = (0.5 * (endline[0] + endline[1])) - posbox;
576 ellen = sc * dist2d(endline[0],endline[1]);
577 scy = cutout_l_end_y_total / ellen;
579 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
582 //%translate(1 * (posboxs[0] - posbox)) square(50);
583 //%translate(1 * (posboxs[1] - posbox)) square(50);
584 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
586 // %translate(1 * (endline[0] - posbox)) square([50,10]);
587 // %translate(1 * (endline[1] - posbox)) square([50,10]);
589 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
590 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
591 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
592 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
595 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
599 module Machine_NewEndProfileDemo(){ ////toplevel
600 translate([0,5,0]) Machine_NewEndProfile();
601 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
603 translate([0,5, 0]) Machine_NewEndProfile();
604 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
608 module Machine_NewArm(){
609 translate([0,0,-30]) linear_extrude(height=60) {
610 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
611 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
615 translate([0,d]) Machine_NewEndProfile();
622 module Machine_NewRearCurve(){
623 slant = atan2(4,210-10);
625 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
626 translate([ rearcurve_double_inrad,
628 -rearcurve_double_inrad + 10 ]){
629 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
631 Machine_NewRearProfile();
632 translate([0,-100]) Machine_NewRearProfile();
636 rotate([0,90,0]) rotate([90,0,0]) {
638 rotate_extrude(convexity=10, $fn=64)
640 translate([ 0, -rearcurve_double_inrad ])
641 Machine_NewRearProfile();
642 translate([0,0,-500])
643 cube([500,500,1000]);
646 translate([1,0,-rearcurve_double_inrad])
647 rotate([0,-90,0]) rotate([0,0,-90])
648 linear_extrude(height= rearcurve_strt_len + 1)
649 Machine_NewRearProfile();
653 module Machine_Curves(){ ////toplevel
654 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
658 translate([ -reartablet_x,
660 -reartablet_z + tablet_z_slop])
662 cube([ reartablet_x+1,
666 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
668 frontcurve_z_slop ]){
669 translate([0, -machine_rear_to_front, 0])
670 multmatrix([[1, -frontcurve_side_skew, 0, 0],
674 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
675 linear_extrude(height= 200)
676 Machine_NewFrontProfile();
678 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
680 frontcurve_z_slop ]){
681 translate([ rearcurve_strt_len,
684 Machine_NewRearCurve();
689 module TestStrapSlots(){
690 pegwidth = teststrap_peg[0];
691 for (pos = teststrapslots_at) {
693 translate(concat(pos,[0]))
694 for (mx = [0,1]) mirror([mx,0,0]) {
695 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
696 cube(concat(teststrap,[40]));
701 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
703 module TestStrapPeg_Short(){ ////toplevel
704 TestStrapPeg_any(35);
707 module TestStrapPeg_Long(){ ////toplevel
708 TestStrapPeg_any(60);
711 module PostSpacer(){ ////toplevel
714 cylinder(r= ply_hole_dia_real/2 - spacer_ext_slop,
717 cylinder(r= post_dia/2 + spacer_int_slop,
722 module Machine(){ ////toplevel
729 module MachineEnvelope(){
731 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
732 y_arm_t = cutout_tile11_y;
733 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
734 y_crv_b = y_arm_t + rearcurve_avoid_y;
736 translate([0,0,-50]) linear_extrude(height= 100){
737 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
738 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
742 module Leg(){ ////toplevel
747 cylinder(r= leg_big_dia/2, h=leg_top_flat_z, $fn=100);
748 translate([0,0, -leg_top_thick])
749 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
752 translate([0,0,-leg_height])
753 cylinder(r= leg_bot_mid_dia/2, h=leg_bot_thick);
754 for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
756 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
757 cube([ leg_fin_top_rad - 0.1,
761 translate([0, -leg_fin_bot_w/2, -leg_height])
762 cube([ leg_fin_bot_rad,
764 leg_fin_bot_flat_z ]);
768 mirror([0,0,1]) translate([0,0,-1])
769 cylinder(r= leg_hole_dia/2,
770 h= (!TEST ? leg_height+2 : leg_height/2),
772 mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
774 cylinder(r= (!TEST ? leg_midspc_dia/2 : 0.1),
775 h= leg_height - leg_top_thick - leg_bot_thick + 0.2,
778 cylinder(r= leg_midspc_dia/2,
779 h= leg_height - leg_top_thick - leg_bot_thick
780 + (!TEST ? 0.2 : -leg_midspc_dia/2),
783 cid_shear = (leg_fin_bot_w - leg_fin_top_w)/2 /
784 (leg_height -leg_fin_bot_flat_z);
785 multmatrix([[ 1, 0, 0, leg_midspc_dia/2 ],
787 1, -leg_fin_bot_w/2 ],
788 [ 0, 1, 0, -leg_height + leg_fin_bot_flat_z ],
790 Commitid_BestCount([ leg_big_dia/2 - leg_midspc_dia/2,
791 leg_height - leg_fin_bot_flat_z
794 for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
795 mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
796 cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
801 function Rectangle_corners(c0, sz) =
802 // returns the corners of a rectangle from c0 to c0+sz
803 // if sz is positive, the corners are anticlockwise starting with c0
806 c0 + [ sz[0], sz[1] ],
809 function Rectangle_corners2posts(c) =
815 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
817 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
819 module Tile02(){ ////toplevel
821 c0 = tile02_tr + -sz;
822 c = Rectangle_corners(c0, sz);
823 posts = Rectangle_corners2posts(c);
827 Rectangle_TileBase(c);
829 RoundEdge(R_EDGE(c,0));
830 RoundEdge(R_EDGE(c,3));
831 InterlockEdge(R_EDGE(c,2), 0);
833 InterlockEdge(R_EDGE(c,1), 1);
840 module Tile12(){ ////toplevel
842 c0 = tile02_tr + [-sz[0], 0];
843 c = Rectangle_corners(c0, sz);
844 posts = Rectangle_corners2posts(c);
848 Rectangle_TileBase(c);
850 RoundEdge(R_EDGE(c,2));
851 RoundEdge(R_EDGE(c,3));
853 InterlockEdge(R_EDGE(c,0), 1);
854 InterlockEdge(R_EDGE(c,1), 1);
861 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
862 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
863 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
865 module Tile11(){ ////toplevel
867 c0 = tile01_tr + [-sz[0],0];
868 c = Rectangle_corners(c0, sz);
869 cnr_posts = Rectangle_corners2posts(c);
871 Posts_interpolate_one(cnr_posts[0],
872 cnr_posts[1] - [cutout_l_end_x, 0]),
873 [ cnr_posts[1] + [0, cutout_tile11_y],
879 Rectangle_TileBase(c);
881 RoundEdge(R_EDGE(c,2));
882 InterlockEdge(R_EDGE(c,3));
884 InterlockEdge(c[0], tile_01_11_cnr, 1);
885 InterlockEdge(tile_11_10_cnr, c[2], 1);
891 module Tile01(){ ////toplevel
893 c0 = tile01_tr + -sz;
894 c = Rectangle_corners(c0, sz);
895 cnr_posts = Rectangle_corners2posts(c);
897 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
898 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
899 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
904 Rectangle_TileBase(c);
906 RoundEdge(R_EDGE(c,0));
907 InterlockEdge(tile_01_11_cnr, c[3]);
908 InterlockEdge(R_EDGE(c,3));
911 InterlockEdge(c[1], tile_01_00_cnr, 1);
916 module Tile10(){ ////toplevel
918 c0 = tile01_tr + [0,0];
919 c = Rectangle_corners(c0, sz);
920 cnr_posts = Rectangle_corners2posts(c);
921 cty = cutout_tile11_y;
922 rcy = cty + rearcurve_avoid_y;
923 posts = [ cnr_posts[0] + [ 0, cty ],
924 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
925 cnr_posts[1] + [ 0, rcy ],
931 Rectangle_TileBase(c);
933 RoundEdge(R_EDGE(c,1));
934 RoundEdge(R_EDGE(c,2));
935 InterlockEdge(c[3], tile_11_10_cnr);
944 module Tile00(){ ////toplevel
946 c0 = tile01_tr + [0,-sz[1]];
947 c = Rectangle_corners(c0, sz);
949 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
950 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
953 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
955 cnr_posts = Rectangle_corners2posts(c);
956 cty = cutout_tile01_y;
957 rcy = cty + frontcurve_avoid_y;
958 posts = [ cnr_posts[0],
960 0.5 * (cnr_posts[0] + cnr_posts[1]),
961 cnr_posts[2] + [ 0, -rcy ],
962 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
963 cnr_posts[3] + [ 0, -cty ]
966 rc2 = [c1bis,c2bis,c[1]];
971 Rectangle_TileBase(c);
973 RoundEdge(R_EDGE(c,0));
974 RoundEdge(c[1], c1bis);
975 InterlockEdge(tile_01_00_cnr, c[0]);
978 translate([0,0,-20]) linear_extrude(height=40) {
979 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
982 RoundEdge(c1bis, c2bis);
992 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
993 c = Rectangle_corners(c0, sz);
995 bsz = sz + [bracexx,0,0];
998 Rectangle_TileBase(c);
1000 translate(concat(c0, [-brace[2] + 0.1])){
1002 cube(concat(bsz, [brace[2]]) - [5,0,0]);
1003 translate(brace + [0,0, -25])
1004 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
1008 RoundEdge(R_EDGE(c,1));
1014 module FitTest_PairLink(cut=false){ ////toplevel
1015 cy0=-55; cy1=85; cx=132;
1018 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
1024 straphole_x_max = legrad/sqrt(2) + footrad_max;
1025 dz = cut ? adj_neg_slop : 0;
1027 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
1028 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
1030 for (endy=[cy0,cy1]) {
1032 translate([cx,endy,dz]){
1034 for (rot=[45:90:315]) rotate(rot) {
1035 translate([legrad,0,0]){
1037 cylinder(r= footrad_max, h=1);
1038 translate([0,0,-footrad_depth])
1039 cylinder(r= footrad_min, h=1);
1042 translate([0,0,-10])
1043 cylinder(r= footrad_min +
1044 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
1049 for (rot=[45,135]) rotate(rot) {
1052 translate([s*legrad,0,0])
1053 cylinder(r= footrad_max, h=bar[1]);
1059 for (rot=[0,180]) rotate(rot) {
1060 translate([ straphole_x_max - strap[0]/2, 0,0 ])
1061 cube(concat(strap,[20]), center=true);
1068 module FitTest_RearCurve(){ ////toplevel
1070 FitTest_general([100,0], [180,100]);
1071 FitTest_PairLink(true);
1076 module FitTest_FrontCurve(){ ////toplevel
1082 translate([0,0,-8]) linear_extrude(height=18) {
1083 translate(p0) square(sz);
1084 translate(teststrapslots_at[3])
1085 scale(2* [ teststrap_peg[0], teststrap[1] ])
1086 circle(r=1, $fn=20);
1089 FitTest_PairLink(true);
1094 module FitTest_Entire(){ ////toplevel
1097 szfront = [243,szrear[1]];
1099 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1100 FitTest_PairLink(true);
1101 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1102 cube([100, -p0[1], 80]);
1106 FitTest_RearCurve();
1107 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1109 FitTest_FrontCurve();
1112 module FitTest_EntireDemo(){ ////toplevel
1117 module FitTest_EndEnd(){ ////toplevel
1120 sz2 = [136,68] - p0;
1122 FitTest_general(p0, sz);
1123 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1124 cube([ sz2[0] +1, 50, 20 ]);
1128 module FitTest_PairDemo(){ ////toplevel
1132 %FitTest_FrontCurve();
1133 %FitTest_RearCurve();
1139 FitTest_FrontCurve();
1140 FitTest_RearCurve();
1142 #FitTest_PairLink(true);
1148 module RoundCornerDemo_plat(cnr){
1149 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1152 module RoundCornerDemo(){ ////toplevel
1153 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1154 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1155 translate([25,0,0]) RoundCornerAdd(cnr);
1156 translate([-25,0,0]) RoundCornerCut(cnr);
1157 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1159 RoundCornerDemo_plat(cnr);
1160 RoundCornerCut(cnr);
1162 RoundCornerAdd(cnr);
1165 module Demo(){ ////toplevel
1166 translate(demo_slop*[-2,1]) color("blue") Tile12();
1167 translate(demo_slop*[-2,0]) color("red") Tile02();
1168 translate(demo_slop*[-2,1]) color("orange") Tile11();
1169 translate(demo_slop*[-2,0]) color("purple") Tile01();
1170 translate(demo_slop*[-3,1]) color("blue") Tile10();
1171 translate(demo_slop*[-3,0]) color("red") Tile00();
1173 // Can also do this, to print reference sheet:
1174 // load this into openscad
1175 // select Ctrl-4 view, view all, scale appropriately
1176 // import sewing-table,Demo-flat.png
1177 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1185 //Machine_NewRearProfile();
1186 //Machine_NewRearCurve();
1187 //Machine_NewFrontProfile();
1188 //Machine_NewEndProfile();
1189 //Machine_NewEndProfileDemo();
1193 //MachineEnvelope();