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;
48 leg_fin_bot_flat_z = 5;
56 machine_rear_to_front = 84 + 0.25 - 1.4;
58 cutout_l_end_y_front_slop = 0.5;
59 cutout_l_end_y_rear_slop = 0.5;
62 cutout_l_end_y = machine_rear_to_front;
63 cutout_l_end_new_x_slop = 1.4 - 1.95;
64 cutout_l_end_y_total = cutout_l_end_y
65 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
67 tile02_tr = [-250, 0];
70 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
71 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
73 // front and rear curves
75 rearedge_len = 170 + 0.70;
78 rearcurve_strt_len = 52;
80 rearcurve_z_slop = -0.50;
82 rearcurve_avoid_y = 35;
84 rearcurve_double_inrad = 26.10 + 8.04;
90 frontcurve_side_skew = 3.5 / 72;
91 frontcurve_avoid_y = 70;
92 frontcurve_z_slop = 0.75;
94 frontcurve_strt_len = 50;
95 frontcurve_dualcurve_angle = 30;
97 teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ],
99 [ 190, -80 ], // do not change index of this one
100 [ 0, 70 ], [ 0, -35 ],
103 teststrap = [ 3, 5 ];
104 teststrap_peg = [7.5, 3.5];
106 ply_edge_hole_dist_real = 14;
113 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
115 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
117 hole_slop = (ply_hole_dia - post_dia)/2;
118 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
120 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
121 tile_hard_edge_hole_dist));
123 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
124 tile_hard_edge_hole_dist + round_edge_rad));
126 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
128 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
129 thehd_bl = -thehd_tr;
130 thehd_br = -thehd_tl;
132 tablet_z_slop = 1.00;
134 interlock_rad = interlock_dia/2;
135 interlock_negative_rad = interlock_rad + 0.125;
137 interlock_sq_adj = 0.2; // arbitrary
139 leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
140 pow(leg_fin_top_w/2,2) );
142 leg_tubule_pos_rad = leg_big_dia/2 * 0.6;
144 m4_define(`POST_TCROSSSZ',
145 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
151 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
152 translate([0,0, tile_th]) {
153 cylinder(r= screw_big_dia/2, h= screw_big_len);
154 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
159 translate([0,0, tile_th/2]) {
160 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
161 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
165 translate([0,0, tile_th/2]) {
166 cube([POST_TCROSSSZ, POST_TCROSSSZ, tile_th], center=true);
175 cylinder(r= post_dia/2 + jig_post_hole_slop, h=10);
176 translate([0,0, -jig_min_th])
177 cylinder(r= ply_hole_dia_real/2, h = 5);
178 for (rot=[0:90:270]) rotate(rot) {
179 translate([ ply_edge_hole_dist_real, 0, 0 ])
180 cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true);
185 module Posts(posts) {
187 translate(concat(p, [0]))
191 module PostHoles(posts) {
193 translate(concat(p, [0]))
198 module TileBase(botleft, topright){
199 size = topright - botleft;
200 botleft_post = botleft + thehd_tr;
201 topright_post = topright + thehd_bl;
204 translate(concat(botleft, [0]))
205 cube(concat(size, [tile_th]));
206 if (!(TEST || JIG)) {
207 cidsz = topright_post-botleft_post
208 + [-post_dia,-post_dia]
210 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
211 echo("CID",cidsz,cidszr);
212 translate( concat(botleft_post, [ -tile_th ])
213 + 0.5 * [ post_dia, post_dia, 0 ]
214 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
215 Commitid_BestCount_M(cidszr);
218 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
219 cidsz = [ thehd[0], size[1] - 2*crossoff ];
220 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
222 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
223 Commitid_BestCount(cidszr);
226 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
227 cube(concat(size - [test_edge,test_edge]*2, [tile_th*2]));
228 translate(concat(botleft_post, [-1]))
229 cube(concat(topright_post-botleft_post, [tile_th+2]));
231 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
234 cube(shufflesz, center=true);
237 translate([0,0,-20]) linear_extrude(height=20) {
238 for (diag=[[ +1, botleft ],
239 [ -1, [topright[0], botleft[1]] ]]) {
241 rotate(atan2(size[1], diag[0] * size[0]))
242 translate([0, -test_edge/2])
243 square([vectorlen2d(size), test_edge]);
253 m4_dnl c is from Rectangle_corners and
254 m4_dnl ix is a corner number
255 m4_dnl expands to two comma-separated corners:
256 m4_dnl that denoted by ix, and the next one anticlockwise
257 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
260 m4_dnl c is from Rectangle_corners and
261 m4_dnl ix is a corner number
262 m4_dnl expands to an array of corners as for RoundCorner
263 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
265 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
266 m4_define(`INREFFRAME',`
267 length_vec = ($2) - ($1);
268 length = dist2d([0,0], length_vec);
269 length_uvec = length_vec / length;
270 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
271 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
272 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
279 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
280 m4_dnl INREFFRAME_EDGE { body; }
281 m4_define(`INREFFRAME_EDGE',`
282 translate([0,0, -round_edge_rad])
285 module RoundEdge(left_cnr, right_cnr) {
286 INREFFRAME(left_cnr, right_cnr)
290 cylinder(r= round_edge_rad, h= length, $fn=50);
291 translate([-1, 0, -20])
292 cube([length+2, 20, 20]);
297 m4_define(`ROUNDCORNER_VARS',`
301 bigr= round_cnr_rad - round_edge_rad;
302 l_uvec = unitvector2d(left_cnr - this_cnr);
303 r_uvec = unitvector2d(right_cnr - this_cnr);
304 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
305 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
306 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
307 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
308 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
309 ctr3 = concat(ctr,[0])
312 module RoundCorner_selector(ci, adj) {
316 INREFFRAME(ctr3,concat(lp1,[4])){
317 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
318 translate([-bigr*2 + adj, -bigr])
319 square([bigr*2, bigr*3]);
324 INREFFRAME(ctr3,concat(lp4,[0])){
325 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
326 translate([-bigr*2, -bigr*2])
327 square([bigr*2 + adj, bigr*3]);
334 module RoundCornerCut(ci) {
335 // ci should be [this_cnr, right_cnr, left_cnr]
336 // where right_cnr is to the right (ie, anticlockwise)
339 RoundCorner_selector(ci, -0.1);
341 cylinder(center=true, h=20, r= bigr);
345 module RoundCornerAdd(ci) {
348 RoundCorner_selector(ci, +0.1);
351 rotate_extrude(convexity=10, $fn=50)
354 circle(r= round_edge_rad, $fn=50);
363 module InterlockLobePlan(negative) {
364 r = negative ? interlock_negative_rad : interlock_rad;
365 ymir = negative ? 0 : 1;
369 translate([thehd[0], 0]){
373 translate([-dx, -0.1])
374 square([ dx*2, r/2 + 0.1 ]);
376 translate([ xi*dx, r ])
384 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
385 for (lobei = [ 0 : nlobes-1 ]) {
386 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
387 translate([lobex, 0, 0]) {
388 InterlockLobePlan(negative);
394 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
395 mirror([0, negative])
396 translate([slotshorter, iadj])
397 square([length - slotshorter*2, interlock_fine + iadj*2]);
401 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
402 plusth = negative * 1.0;
403 protr = interlock_fine + interlock_sq_adj;
406 z1 = -tile_th/2 - protr / interlock_fine_slope;
407 z3 = -tile_th/2 + protr / interlock_fine_slope;
409 negsign = negative ? -1 : +1;
410 yprotr = negsign * protr;
412 INREFFRAME(left_cnr, right_cnr) {
413 for (vsect = [ // zs0 zs1 ys0, ys1
414 [ -tile_th-plusth, plusth, 0, 0],
415 [ z1, z2, 0, yprotr],
416 [ z2, z3, yprotr, 0],
426 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
430 linear_extrude(height=zsd, convexity=10)
431 InterlockEdgePlan(negative, nlobes, length, !!ysd);
436 function TestPiece_holes2corners(holes) =
437 [ holes[0] + thehd_bl,
440 holes[0] + thehd_tl ];
442 module TestPiece1(){ ////toplevel
446 corners = TestPiece_holes2corners(holes);
447 rcs = R_CNR(corners,0);
450 TileBase(corners[0], corners[2]);
452 RoundEdge(corners[0], corners[1]);
453 RoundEdge(corners[3], corners[0]);
455 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
462 module TestPiece2(){ ////toplevel
466 corners = TestPiece_holes2corners(holes);
469 TileBase(corners[0], corners[2]);
471 RoundEdge(corners[0], corners[1]);
472 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
478 module TestDemo(){ ////toplevel
479 translate([ -thehd[0], 0 ])
482 translate([ +thehd[0] + demo_slop, 0 ])
486 module Machine_NewRearProfile(){
487 // figures copied out of xfig edit boxes
488 // best not to edit the posbox size if poss - just move it
489 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
490 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
491 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
492 scaleline_mm = 12+5+10+5+3;
493 sh = -[abs(posbox[0]), abs(posbox[1])];
494 rot = atan2(-sideline[0], sideline[1]);
495 sc = scaleline_mm / scaleline;
496 //echo("SH",sh,rot,sc);
497 scale(sc) rotate(rot) translate(sh){
498 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
502 module Machine_NewFrontProfile(){
503 // figures copied out of xfig edit boxes
504 // best not to edit the posbox size if poss - just move it
505 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
506 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
507 refline_mm = (11-1)*10;
508 sh = -[abs(posbox[0]), abs(posbox[1])];
509 rot = atan2(-refline[0], refline[1]);
510 sc = refline_mm / vectorlen2d(refline);
511 //echo("SH",sh,rot,sc);
512 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
513 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
517 module Machine_NewEndProfile(){
518 // figures copied out of xfig edit boxes
519 // NB that y coords are reversed - xfig origin is at bottom left
520 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
521 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
522 refline_mm = 10 * (11 - 2.5);
523 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
524 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
525 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
529 posbox = [min(posboxs[0][0],posboxs[1][0]),
530 max(posboxs[0][1],posboxs[1][1])];
532 m4_define(`MNEP_ELP',
533 `line_intersection_2d(baseline[0],baseline[1],
534 sidelines[$1][0],sidelines[$1][1])')
535 endline = [MNEP_ELP(0),MNEP_ELP(1)];
537 rot = atan2(-refline[1], -refline[0]);
538 sc = refline_mm / vectorlen2d(refline);
539 sh = (0.5 * (endline[0] + endline[1])) - posbox;
541 ellen = sc * dist2d(endline[0],endline[1]);
542 scy = cutout_l_end_y_total / ellen;
544 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
547 //%translate(1 * (posboxs[0] - posbox)) square(50);
548 //%translate(1 * (posboxs[1] - posbox)) square(50);
549 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
551 // %translate(1 * (endline[0] - posbox)) square([50,10]);
552 // %translate(1 * (endline[1] - posbox)) square([50,10]);
554 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
555 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
556 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
557 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
560 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
564 module Machine_NewEndProfileDemo(){ ////toplevel
565 translate([0,5,0]) Machine_NewEndProfile();
566 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
568 translate([0,5, 0]) Machine_NewEndProfile();
569 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
573 module Machine_NewArm(){
574 translate([0,0,-30]) linear_extrude(height=60) {
575 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
576 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
580 translate([0,d]) Machine_NewEndProfile();
587 module Machine_NewRearCurve(){
588 slant = atan2(4,210-10);
590 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
591 translate([ rearcurve_double_inrad,
593 -rearcurve_double_inrad + 10 ]){
594 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
596 Machine_NewRearProfile();
597 translate([0,-100]) Machine_NewRearProfile();
601 rotate([0,90,0]) rotate([90,0,0]) {
603 rotate_extrude(convexity=10, $fn=64)
605 translate([ 0, -rearcurve_double_inrad ])
606 Machine_NewRearProfile();
607 translate([0,0,-500])
608 cube([500,500,1000]);
611 translate([1,0,-rearcurve_double_inrad])
612 rotate([0,-90,0]) rotate([0,0,-90])
613 linear_extrude(height= rearcurve_strt_len + 1)
614 Machine_NewRearProfile();
618 module Machine_Curves(){ ////toplevel
619 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
623 translate([ -reartablet_x,
625 -reartablet_z + tablet_z_slop])
627 cube([ reartablet_x+1,
631 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
633 frontcurve_z_slop ]){
634 translate([0, -machine_rear_to_front, 0])
635 multmatrix([[1, -frontcurve_side_skew, 0, 0],
639 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
640 linear_extrude(height= 200)
641 Machine_NewFrontProfile();
643 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
645 frontcurve_z_slop ]){
646 translate([ rearcurve_strt_len,
649 Machine_NewRearCurve();
654 module TestStrapSlots(){
655 pegwidth = teststrap_peg[0];
656 for (pos = teststrapslots_at) {
658 translate(concat(pos,[0]))
659 for (mx = [0,1]) mirror([mx,0,0]) {
660 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
661 cube(concat(teststrap,[40]));
666 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
668 module TestStrapPeg_Short(){ ////toplevel
669 TestStrapPeg_any(35);
672 module TestStrapPeg_Long(){ ////toplevel
673 TestStrapPeg_any(60);
676 module Machine(){ ////toplevel
683 module MachineEnvelope(){
685 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
686 y_arm_t = cutout_tile11_y;
687 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
688 y_crv_b = y_arm_t + rearcurve_avoid_y;
690 translate([0,0,-50]) linear_extrude(height= 100){
691 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
692 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
696 module Leg(){ ////toplevel
701 cylinder(r= leg_big_dia/2, h=leg_top_flat_z, $fn=100);
702 translate([0,0, -leg_top_thick])
703 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
706 translate([0,0,-leg_height])
707 cylinder(r= leg_bot_mid_dia/2, h=leg_bot_thick);
708 for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
710 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
711 cube([ leg_fin_top_rad - 0.1,
715 translate([0, -leg_fin_bot_w/2, -leg_height])
716 cube([ leg_fin_bot_rad,
718 leg_fin_bot_flat_z ]);
722 mirror([0,0,1]) translate([0,0,-1])
723 cylinder(r= leg_hole_dia/2,
724 h= (!TEST ? leg_height+2 : leg_height/2),
726 mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
728 cylinder(r= (!TEST ? leg_midspc_dia/2 : 0.1),
729 h= leg_height - leg_top_thick - leg_bot_thick + 0.2,
732 cylinder(r= leg_midspc_dia/2,
733 h= leg_height - leg_top_thick - leg_bot_thick
734 + (!TEST ? 0.2 : -leg_midspc_dia/2),
737 for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
738 mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
739 cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
744 function Rectangle_corners(c0, sz) =
745 // returns the corners of a rectangle from c0 to c0+sz
746 // if sz is positive, the corners are anticlockwise starting with c0
749 c0 + [ sz[0], sz[1] ],
752 function Rectangle_corners2posts(c) =
758 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
760 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
762 module Tile02(){ ////toplevel
764 c0 = tile02_tr + -sz;
765 c = Rectangle_corners(c0, sz);
766 posts = Rectangle_corners2posts(c);
770 Rectangle_TileBase(c);
772 RoundEdge(R_EDGE(c,0));
773 RoundEdge(R_EDGE(c,3));
774 InterlockEdge(R_EDGE(c,2), 0);
776 InterlockEdge(R_EDGE(c,1), 1);
783 module Tile12(){ ////toplevel
785 c0 = tile02_tr + [-sz[0], 0];
786 c = Rectangle_corners(c0, sz);
787 posts = Rectangle_corners2posts(c);
791 Rectangle_TileBase(c);
793 RoundEdge(R_EDGE(c,2));
794 RoundEdge(R_EDGE(c,3));
796 InterlockEdge(R_EDGE(c,0), 1);
797 InterlockEdge(R_EDGE(c,1), 1);
804 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
805 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
806 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
808 module Tile11(){ ////toplevel
810 c0 = tile01_tr + [-sz[0],0];
811 c = Rectangle_corners(c0, sz);
812 cnr_posts = Rectangle_corners2posts(c);
814 Posts_interpolate_one(cnr_posts[0],
815 cnr_posts[1] - [cutout_l_end_x, 0]),
816 [ cnr_posts[1] + [0, cutout_tile11_y],
822 Rectangle_TileBase(c);
824 RoundEdge(R_EDGE(c,2));
825 InterlockEdge(R_EDGE(c,3));
827 InterlockEdge(c[0], tile_01_11_cnr, 1);
828 InterlockEdge(tile_11_10_cnr, c[2], 1);
834 module Tile01(){ ////toplevel
836 c0 = tile01_tr + -sz;
837 c = Rectangle_corners(c0, sz);
838 cnr_posts = Rectangle_corners2posts(c);
840 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
841 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
842 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
847 Rectangle_TileBase(c);
849 RoundEdge(R_EDGE(c,0));
850 InterlockEdge(tile_01_11_cnr, c[3]);
851 InterlockEdge(R_EDGE(c,3));
854 InterlockEdge(c[1], tile_01_00_cnr, 1);
859 module Tile10(){ ////toplevel
861 c0 = tile01_tr + [0,0];
862 c = Rectangle_corners(c0, sz);
863 cnr_posts = Rectangle_corners2posts(c);
864 cty = cutout_tile11_y;
865 rcy = cty + rearcurve_avoid_y;
866 posts = [ cnr_posts[0] + [ 0, cty ],
867 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
868 cnr_posts[1] + [ 0, rcy ],
874 Rectangle_TileBase(c);
876 RoundEdge(R_EDGE(c,1));
877 RoundEdge(R_EDGE(c,2));
878 InterlockEdge(c[3], tile_11_10_cnr);
887 module Tile00(){ ////toplevel
889 c0 = tile01_tr + [0,-sz[1]];
890 c = Rectangle_corners(c0, sz);
892 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
893 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
896 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
898 cnr_posts = Rectangle_corners2posts(c);
899 cty = cutout_tile01_y;
900 rcy = cty + frontcurve_avoid_y;
901 posts = [ cnr_posts[0],
903 0.5 * (cnr_posts[0] + cnr_posts[1]),
904 cnr_posts[2] + [ 0, -rcy ],
905 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
906 cnr_posts[3] + [ 0, -cty ]
909 rc2 = [c1bis,c2bis,c[1]];
914 Rectangle_TileBase(c);
916 RoundEdge(R_EDGE(c,0));
917 RoundEdge(c[1], c1bis);
918 InterlockEdge(tile_01_00_cnr, c[0]);
921 translate([0,0,-20]) linear_extrude(height=40) {
922 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
925 RoundEdge(c1bis, c2bis);
935 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
936 c = Rectangle_corners(c0, sz);
938 bsz = sz + [bracexx,0,0];
941 Rectangle_TileBase(c);
943 translate(concat(c0, [-brace[2] + 0.1])){
945 cube(concat(bsz, [brace[2]]) - [5,0,0]);
946 translate(brace + [0,0, -25])
947 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
951 RoundEdge(R_EDGE(c,1));
957 module FitTest_PairLink(cut=false){ ////toplevel
958 cy0=-55; cy1=85; cx=132;
961 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
967 straphole_x_max = legrad/sqrt(2) + footrad_max;
968 dz = cut ? adj_neg_slop : 0;
970 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
971 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
973 for (endy=[cy0,cy1]) {
975 translate([cx,endy,dz]){
977 for (rot=[45:90:315]) rotate(rot) {
978 translate([legrad,0,0]){
980 cylinder(r= footrad_max, h=1);
981 translate([0,0,-footrad_depth])
982 cylinder(r= footrad_min, h=1);
986 cylinder(r= footrad_min +
987 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
992 for (rot=[45,135]) rotate(rot) {
995 translate([s*legrad,0,0])
996 cylinder(r= footrad_max, h=bar[1]);
1002 for (rot=[0,180]) rotate(rot) {
1003 translate([ straphole_x_max - strap[0]/2, 0,0 ])
1004 cube(concat(strap,[20]), center=true);
1011 module FitTest_RearCurve(){ ////toplevel
1013 FitTest_general([100,0], [180,100]);
1014 FitTest_PairLink(true);
1019 module FitTest_FrontCurve(){ ////toplevel
1025 translate([0,0,-8]) linear_extrude(height=18) {
1026 translate(p0) square(sz);
1027 translate(teststrapslots_at[3])
1028 scale(2* [ teststrap_peg[0], teststrap[1] ])
1029 circle(r=1, $fn=20);
1032 FitTest_PairLink(true);
1037 module FitTest_Entire(){ ////toplevel
1040 szfront = [243,szrear[1]];
1042 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1043 FitTest_PairLink(true);
1044 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1045 cube([100, -p0[1], 80]);
1049 FitTest_RearCurve();
1050 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1052 FitTest_FrontCurve();
1055 module FitTest_EntireDemo(){ ////toplevel
1060 module FitTest_EndEnd(){ ////toplevel
1063 sz2 = [136,68] - p0;
1065 FitTest_general(p0, sz);
1066 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1067 cube([ sz2[0] +1, 50, 20 ]);
1071 module FitTest_PairDemo(){ ////toplevel
1075 %FitTest_FrontCurve();
1076 %FitTest_RearCurve();
1082 FitTest_FrontCurve();
1083 FitTest_RearCurve();
1085 #FitTest_PairLink(true);
1091 module RoundCornerDemo_plat(cnr){
1092 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1095 module RoundCornerDemo(){ ////toplevel
1096 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1097 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1098 translate([25,0,0]) RoundCornerAdd(cnr);
1099 translate([-25,0,0]) RoundCornerCut(cnr);
1100 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1102 RoundCornerDemo_plat(cnr);
1103 RoundCornerCut(cnr);
1105 RoundCornerAdd(cnr);
1108 module Demo(){ ////toplevel
1109 translate(demo_slop*[-2,1]) color("blue") Tile12();
1110 translate(demo_slop*[-2,0]) color("red") Tile02();
1111 translate(demo_slop*[-2,1]) color("orange") Tile11();
1112 translate(demo_slop*[-2,0]) color("purple") Tile01();
1113 translate(demo_slop*[-3,1]) color("blue") Tile10();
1114 translate(demo_slop*[-3,0]) color("red") Tile00();
1116 // Can also do this, to print reference sheet:
1117 // load this into openscad
1118 // select Ctrl-4 view, view all, scale appropriately
1119 // import sewing-table,Demo-flat.png
1120 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1128 //Machine_NewRearProfile();
1129 //Machine_NewRearCurve();
1130 //Machine_NewFrontProfile();
1131 //Machine_NewEndProfile();
1132 //Machine_NewEndProfileDemo();
1136 //MachineEnvelope();