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 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 PostTestPiece(){ ////toplevel
487 hole_sizes = [2.8, 3.0, 3.1, 3.134, 3.168, 3.2, 3.3, 3.5];
488 nholes = len(hole_sizes)*2;
490 stride = post_dia*1.5;
491 rect_sz = stride * [ nrows,
492 ceil(nholes/nrows) ];
493 corners = Rectangle_corners(-stride * 0.5 * [1,1], rect_sz);
496 TileBase(corners[0], corners[2]);
497 RoundEdge(corners[0], corners[1]);
498 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
499 for (i= [ 0: nholes-1 ]) {
500 $screw_dia = hole_sizes[ floor(i/2) ];
501 translate(stride * [ (nrows-1) - (i % nrows),
508 translate([post_dia/2, -post_dia/2, 1])
509 cube([1, post_dia * (i / nholes), tile_th]);
516 module Machine_NewRearProfile(){
517 // figures copied out of xfig edit boxes
518 // best not to edit the posbox size if poss - just move it
519 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
520 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
521 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
522 scaleline_mm = 12+5+10+5+3;
523 sh = -[abs(posbox[0]), abs(posbox[1])];
524 rot = atan2(-sideline[0], sideline[1]);
525 sc = scaleline_mm / scaleline;
526 //echo("SH",sh,rot,sc);
527 scale(sc) rotate(rot) translate(sh){
528 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
532 module Machine_NewFrontProfile(){
533 // figures copied out of xfig edit boxes
534 // best not to edit the posbox size if poss - just move it
535 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
536 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
537 refline_mm = (11-1)*10;
538 sh = -[abs(posbox[0]), abs(posbox[1])];
539 rot = atan2(-refline[0], refline[1]);
540 sc = refline_mm / vectorlen2d(refline);
541 //echo("SH",sh,rot,sc);
542 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
543 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
547 module Machine_NewEndProfile(){
548 // figures copied out of xfig edit boxes
549 // NB that y coords are reversed - xfig origin is at bottom left
550 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
551 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
552 refline_mm = 10 * (11 - 2.5);
553 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
554 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
555 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
559 posbox = [min(posboxs[0][0],posboxs[1][0]),
560 max(posboxs[0][1],posboxs[1][1])];
562 m4_define(`MNEP_ELP',
563 `line_intersection_2d(baseline[0],baseline[1],
564 sidelines[$1][0],sidelines[$1][1])')
565 endline = [MNEP_ELP(0),MNEP_ELP(1)];
567 rot = atan2(-refline[1], -refline[0]);
568 sc = refline_mm / vectorlen2d(refline);
569 sh = (0.5 * (endline[0] + endline[1])) - posbox;
571 ellen = sc * dist2d(endline[0],endline[1]);
572 scy = cutout_l_end_y_total / ellen;
574 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
577 //%translate(1 * (posboxs[0] - posbox)) square(50);
578 //%translate(1 * (posboxs[1] - posbox)) square(50);
579 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
581 // %translate(1 * (endline[0] - posbox)) square([50,10]);
582 // %translate(1 * (endline[1] - posbox)) square([50,10]);
584 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
585 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
586 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
587 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
590 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
594 module Machine_NewEndProfileDemo(){ ////toplevel
595 translate([0,5,0]) Machine_NewEndProfile();
596 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
598 translate([0,5, 0]) Machine_NewEndProfile();
599 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
603 module Machine_NewArm(){
604 translate([0,0,-30]) linear_extrude(height=60) {
605 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
606 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
610 translate([0,d]) Machine_NewEndProfile();
617 module Machine_NewRearCurve(){
618 slant = atan2(4,210-10);
620 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
621 translate([ rearcurve_double_inrad,
623 -rearcurve_double_inrad + 10 ]){
624 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
626 Machine_NewRearProfile();
627 translate([0,-100]) Machine_NewRearProfile();
631 rotate([0,90,0]) rotate([90,0,0]) {
633 rotate_extrude(convexity=10, $fn=64)
635 translate([ 0, -rearcurve_double_inrad ])
636 Machine_NewRearProfile();
637 translate([0,0,-500])
638 cube([500,500,1000]);
641 translate([1,0,-rearcurve_double_inrad])
642 rotate([0,-90,0]) rotate([0,0,-90])
643 linear_extrude(height= rearcurve_strt_len + 1)
644 Machine_NewRearProfile();
648 module Machine_Curves(){ ////toplevel
649 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
653 translate([ -reartablet_x,
655 -reartablet_z + tablet_z_slop])
657 cube([ reartablet_x+1,
661 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
663 frontcurve_z_slop ]){
664 translate([0, -machine_rear_to_front, 0])
665 multmatrix([[1, -frontcurve_side_skew, 0, 0],
669 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
670 linear_extrude(height= 200)
671 Machine_NewFrontProfile();
673 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
675 frontcurve_z_slop ]){
676 translate([ rearcurve_strt_len,
679 Machine_NewRearCurve();
684 module TestStrapSlots(){
685 pegwidth = teststrap_peg[0];
686 for (pos = teststrapslots_at) {
688 translate(concat(pos,[0]))
689 for (mx = [0,1]) mirror([mx,0,0]) {
690 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
691 cube(concat(teststrap,[40]));
696 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
698 module TestStrapPeg_Short(){ ////toplevel
699 TestStrapPeg_any(35);
702 module TestStrapPeg_Long(){ ////toplevel
703 TestStrapPeg_any(60);
706 module Machine(){ ////toplevel
713 module MachineEnvelope(){
715 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
716 y_arm_t = cutout_tile11_y;
717 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
718 y_crv_b = y_arm_t + rearcurve_avoid_y;
720 translate([0,0,-50]) linear_extrude(height= 100){
721 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
722 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
726 module Leg(){ ////toplevel
731 cylinder(r= leg_big_dia/2, h=leg_top_flat_z, $fn=100);
732 translate([0,0, -leg_top_thick])
733 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
736 translate([0,0,-leg_height])
737 cylinder(r= leg_bot_mid_dia/2, h=leg_bot_thick);
738 for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
740 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
741 cube([ leg_fin_top_rad - 0.1,
745 translate([0, -leg_fin_bot_w/2, -leg_height])
746 cube([ leg_fin_bot_rad,
748 leg_fin_bot_flat_z ]);
752 mirror([0,0,1]) translate([0,0,-1])
753 cylinder(r= leg_hole_dia/2,
754 h= (!TEST ? leg_height+2 : leg_height/2),
756 mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
758 cylinder(r= (!TEST ? leg_midspc_dia/2 : 0.1),
759 h= leg_height - leg_top_thick - leg_bot_thick + 0.2,
762 cylinder(r= leg_midspc_dia/2,
763 h= leg_height - leg_top_thick - leg_bot_thick
764 + (!TEST ? 0.2 : -leg_midspc_dia/2),
768 for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
769 mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
770 cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
775 function Rectangle_corners(c0, sz) =
776 // returns the corners of a rectangle from c0 to c0+sz
777 // if sz is positive, the corners are anticlockwise starting with c0
780 c0 + [ sz[0], sz[1] ],
783 function Rectangle_corners2posts(c) =
789 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
791 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
793 module Tile02(){ ////toplevel
795 c0 = tile02_tr + -sz;
796 c = Rectangle_corners(c0, sz);
797 posts = Rectangle_corners2posts(c);
801 Rectangle_TileBase(c);
803 RoundEdge(R_EDGE(c,0));
804 RoundEdge(R_EDGE(c,3));
805 InterlockEdge(R_EDGE(c,2), 0);
807 InterlockEdge(R_EDGE(c,1), 1);
814 module Tile12(){ ////toplevel
816 c0 = tile02_tr + [-sz[0], 0];
817 c = Rectangle_corners(c0, sz);
818 posts = Rectangle_corners2posts(c);
822 Rectangle_TileBase(c);
824 RoundEdge(R_EDGE(c,2));
825 RoundEdge(R_EDGE(c,3));
827 InterlockEdge(R_EDGE(c,0), 1);
828 InterlockEdge(R_EDGE(c,1), 1);
835 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
836 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
837 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
839 module Tile11(){ ////toplevel
841 c0 = tile01_tr + [-sz[0],0];
842 c = Rectangle_corners(c0, sz);
843 cnr_posts = Rectangle_corners2posts(c);
845 Posts_interpolate_one(cnr_posts[0],
846 cnr_posts[1] - [cutout_l_end_x, 0]),
847 [ cnr_posts[1] + [0, cutout_tile11_y],
853 Rectangle_TileBase(c);
855 RoundEdge(R_EDGE(c,2));
856 InterlockEdge(R_EDGE(c,3));
858 InterlockEdge(c[0], tile_01_11_cnr, 1);
859 InterlockEdge(tile_11_10_cnr, c[2], 1);
865 module Tile01(){ ////toplevel
867 c0 = tile01_tr + -sz;
868 c = Rectangle_corners(c0, sz);
869 cnr_posts = Rectangle_corners2posts(c);
871 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
872 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
873 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
878 Rectangle_TileBase(c);
880 RoundEdge(R_EDGE(c,0));
881 InterlockEdge(tile_01_11_cnr, c[3]);
882 InterlockEdge(R_EDGE(c,3));
885 InterlockEdge(c[1], tile_01_00_cnr, 1);
890 module Tile10(){ ////toplevel
892 c0 = tile01_tr + [0,0];
893 c = Rectangle_corners(c0, sz);
894 cnr_posts = Rectangle_corners2posts(c);
895 cty = cutout_tile11_y;
896 rcy = cty + rearcurve_avoid_y;
897 posts = [ cnr_posts[0] + [ 0, cty ],
898 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
899 cnr_posts[1] + [ 0, rcy ],
905 Rectangle_TileBase(c);
907 RoundEdge(R_EDGE(c,1));
908 RoundEdge(R_EDGE(c,2));
909 InterlockEdge(c[3], tile_11_10_cnr);
918 module Tile00(){ ////toplevel
920 c0 = tile01_tr + [0,-sz[1]];
921 c = Rectangle_corners(c0, sz);
923 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
924 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
927 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
929 cnr_posts = Rectangle_corners2posts(c);
930 cty = cutout_tile01_y;
931 rcy = cty + frontcurve_avoid_y;
932 posts = [ cnr_posts[0],
934 0.5 * (cnr_posts[0] + cnr_posts[1]),
935 cnr_posts[2] + [ 0, -rcy ],
936 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
937 cnr_posts[3] + [ 0, -cty ]
940 rc2 = [c1bis,c2bis,c[1]];
945 Rectangle_TileBase(c);
947 RoundEdge(R_EDGE(c,0));
948 RoundEdge(c[1], c1bis);
949 InterlockEdge(tile_01_00_cnr, c[0]);
952 translate([0,0,-20]) linear_extrude(height=40) {
953 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
956 RoundEdge(c1bis, c2bis);
966 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
967 c = Rectangle_corners(c0, sz);
969 bsz = sz + [bracexx,0,0];
972 Rectangle_TileBase(c);
974 translate(concat(c0, [-brace[2] + 0.1])){
976 cube(concat(bsz, [brace[2]]) - [5,0,0]);
977 translate(brace + [0,0, -25])
978 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
982 RoundEdge(R_EDGE(c,1));
988 module FitTest_PairLink(cut=false){ ////toplevel
989 cy0=-55; cy1=85; cx=132;
992 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
998 straphole_x_max = legrad/sqrt(2) + footrad_max;
999 dz = cut ? adj_neg_slop : 0;
1001 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
1002 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
1004 for (endy=[cy0,cy1]) {
1006 translate([cx,endy,dz]){
1008 for (rot=[45:90:315]) rotate(rot) {
1009 translate([legrad,0,0]){
1011 cylinder(r= footrad_max, h=1);
1012 translate([0,0,-footrad_depth])
1013 cylinder(r= footrad_min, h=1);
1016 translate([0,0,-10])
1017 cylinder(r= footrad_min +
1018 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
1023 for (rot=[45,135]) rotate(rot) {
1026 translate([s*legrad,0,0])
1027 cylinder(r= footrad_max, h=bar[1]);
1033 for (rot=[0,180]) rotate(rot) {
1034 translate([ straphole_x_max - strap[0]/2, 0,0 ])
1035 cube(concat(strap,[20]), center=true);
1042 module FitTest_RearCurve(){ ////toplevel
1044 FitTest_general([100,0], [180,100]);
1045 FitTest_PairLink(true);
1050 module FitTest_FrontCurve(){ ////toplevel
1056 translate([0,0,-8]) linear_extrude(height=18) {
1057 translate(p0) square(sz);
1058 translate(teststrapslots_at[3])
1059 scale(2* [ teststrap_peg[0], teststrap[1] ])
1060 circle(r=1, $fn=20);
1063 FitTest_PairLink(true);
1068 module FitTest_Entire(){ ////toplevel
1071 szfront = [243,szrear[1]];
1073 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1074 FitTest_PairLink(true);
1075 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1076 cube([100, -p0[1], 80]);
1080 FitTest_RearCurve();
1081 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1083 FitTest_FrontCurve();
1086 module FitTest_EntireDemo(){ ////toplevel
1091 module FitTest_EndEnd(){ ////toplevel
1094 sz2 = [136,68] - p0;
1096 FitTest_general(p0, sz);
1097 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1098 cube([ sz2[0] +1, 50, 20 ]);
1102 module FitTest_PairDemo(){ ////toplevel
1106 %FitTest_FrontCurve();
1107 %FitTest_RearCurve();
1113 FitTest_FrontCurve();
1114 FitTest_RearCurve();
1116 #FitTest_PairLink(true);
1122 module RoundCornerDemo_plat(cnr){
1123 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1126 module RoundCornerDemo(){ ////toplevel
1127 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1128 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1129 translate([25,0,0]) RoundCornerAdd(cnr);
1130 translate([-25,0,0]) RoundCornerCut(cnr);
1131 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1133 RoundCornerDemo_plat(cnr);
1134 RoundCornerCut(cnr);
1136 RoundCornerAdd(cnr);
1139 module Demo(){ ////toplevel
1140 translate(demo_slop*[-2,1]) color("blue") Tile12();
1141 translate(demo_slop*[-2,0]) color("red") Tile02();
1142 translate(demo_slop*[-2,1]) color("orange") Tile11();
1143 translate(demo_slop*[-2,0]) color("purple") Tile01();
1144 translate(demo_slop*[-3,1]) color("blue") Tile10();
1145 translate(demo_slop*[-3,0]) color("red") Tile00();
1147 // Can also do this, to print reference sheet:
1148 // load this into openscad
1149 // select Ctrl-4 view, view all, scale appropriately
1150 // import sewing-table,Demo-flat.png
1151 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1159 //Machine_NewRearProfile();
1160 //Machine_NewRearCurve();
1161 //Machine_NewFrontProfile();
1162 //Machine_NewEndProfile();
1163 //Machine_NewEndProfileDemo();
1167 //MachineEnvelope();