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;
49 machine_rear_to_front = 84 + 0.25 - 1.4;
51 cutout_l_end_y_front_slop = 0.5;
52 cutout_l_end_y_rear_slop = 0.5;
55 cutout_l_end_y = machine_rear_to_front;
56 cutout_l_end_new_x_slop = 1.4 - 1.95;
57 cutout_l_end_y_total = cutout_l_end_y
58 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
60 tile02_tr = [-250, 0];
63 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
64 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
66 // front and rear curves
68 rearedge_len = 170 + 0.70;
71 rearcurve_strt_len = 52;
73 rearcurve_z_slop = -0.50;
75 rearcurve_avoid_y = 35;
77 rearcurve_double_inrad = 26.10 + 8.04;
83 frontcurve_side_skew = 3.5 / 72;
84 frontcurve_avoid_y = 70;
85 frontcurve_z_slop = 0.75;
87 frontcurve_strt_len = 50;
88 frontcurve_dualcurve_angle = 30;
90 teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ],
92 [ 190, -80 ], // do not change index of this one
93 [ 0, 70 ], [ 0, -35 ],
97 teststrap_peg = [7.5, 3.5];
99 ply_edge_hole_dist_real = 14;
106 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
108 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
110 hole_slop = (ply_hole_dia - post_dia)/2;
111 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
113 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
114 tile_hard_edge_hole_dist));
116 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
117 tile_hard_edge_hole_dist + round_edge_rad));
119 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
121 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
122 thehd_bl = -thehd_tr;
123 thehd_br = -thehd_tl;
125 tablet_z_slop = 1.00;
127 interlock_rad = interlock_dia/2;
128 interlock_negative_rad = interlock_rad + 0.125;
130 interlock_sq_adj = 0.2; // arbitrary
132 leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
133 pow(leg_fin_top_w/2,2) );
135 m4_define(`POST_TCROSSSZ',
136 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
142 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
143 translate([0,0, tile_th]) {
144 cylinder(r= screw_big_dia/2, h= screw_big_len);
145 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
150 translate([0,0, tile_th/2]) {
151 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
152 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
156 translate([0,0, tile_th/2]) {
157 cube([POST_TCROSSSZ, POST_TCROSSSZ, tile_th], center=true);
166 cylinder(r= post_dia/2 + jig_post_hole_slop, h=10);
167 translate([0,0, -jig_min_th])
168 cylinder(r= ply_hole_dia_real/2, h = 5);
169 for (rot=[0:90:270]) rotate(rot) {
170 translate([ ply_edge_hole_dist_real, 0, 0 ])
171 cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true);
176 module Posts(posts) {
178 translate(concat(p, [0]))
182 module PostHoles(posts) {
184 translate(concat(p, [0]))
189 module TileBase(botleft, topright){
190 size = topright - botleft;
191 botleft_post = botleft + thehd_tr;
192 topright_post = topright + thehd_bl;
195 translate(concat(botleft, [0]))
196 cube(concat(size, [tile_th]));
197 if (!(TEST || JIG)) {
198 cidsz = topright_post-botleft_post
199 + [-post_dia,-post_dia]
201 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
202 echo("CID",cidsz,cidszr);
203 translate( concat(botleft_post, [ -tile_th ])
204 + 0.5 * [ post_dia, post_dia, 0 ]
205 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
206 Commitid_BestCount_M(cidszr);
209 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
210 cidsz = [ thehd[0], size[1] - 2*crossoff ];
211 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
213 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
214 Commitid_BestCount(cidszr);
217 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
218 cube(concat(size - [test_edge,test_edge]*2, [tile_th*2]));
219 translate(concat(botleft_post, [-1]))
220 cube(concat(topright_post-botleft_post, [tile_th+2]));
222 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
225 cube(shufflesz, center=true);
228 translate([0,0,-20]) linear_extrude(height=20) {
229 for (diag=[[ +1, botleft ],
230 [ -1, [topright[0], botleft[1]] ]]) {
232 rotate(atan2(size[1], diag[0] * size[0]))
233 translate([0, -test_edge/2])
234 square([vectorlen2d(size), test_edge]);
244 m4_dnl c is from Rectangle_corners and
245 m4_dnl ix is a corner number
246 m4_dnl expands to two comma-separated corners:
247 m4_dnl that denoted by ix, and the next one anticlockwise
248 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
251 m4_dnl c is from Rectangle_corners and
252 m4_dnl ix is a corner number
253 m4_dnl expands to an array of corners as for RoundCorner
254 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
256 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
257 m4_define(`INREFFRAME',`
258 length_vec = ($2) - ($1);
259 length = dist2d([0,0], length_vec);
260 length_uvec = length_vec / length;
261 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
262 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
263 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
270 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
271 m4_dnl INREFFRAME_EDGE { body; }
272 m4_define(`INREFFRAME_EDGE',`
273 translate([0,0, -round_edge_rad])
276 module RoundEdge(left_cnr, right_cnr) {
277 INREFFRAME(left_cnr, right_cnr)
281 cylinder(r= round_edge_rad, h= length, $fn=50);
282 translate([-1, 0, -20])
283 cube([length+2, 20, 20]);
288 m4_define(`ROUNDCORNER_VARS',`
292 bigr= round_cnr_rad - round_edge_rad;
293 l_uvec = unitvector2d(left_cnr - this_cnr);
294 r_uvec = unitvector2d(right_cnr - this_cnr);
295 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
296 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
297 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
298 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
299 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
300 ctr3 = concat(ctr,[0])
303 module RoundCorner_selector(ci, adj) {
307 INREFFRAME(ctr3,concat(lp1,[4])){
308 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
309 translate([-bigr*2 + adj, -bigr])
310 square([bigr*2, bigr*3]);
315 INREFFRAME(ctr3,concat(lp4,[0])){
316 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
317 translate([-bigr*2, -bigr*2])
318 square([bigr*2 + adj, bigr*3]);
325 module RoundCornerCut(ci) {
326 // ci should be [this_cnr, right_cnr, left_cnr]
327 // where right_cnr is to the right (ie, anticlockwise)
330 RoundCorner_selector(ci, -0.1);
332 cylinder(center=true, h=20, r= bigr);
336 module RoundCornerAdd(ci) {
339 RoundCorner_selector(ci, +0.1);
342 rotate_extrude(convexity=10, $fn=50)
345 circle(r= round_edge_rad, $fn=50);
354 module InterlockLobePlan(negative) {
355 r = negative ? interlock_negative_rad : interlock_rad;
356 ymir = negative ? 0 : 1;
360 translate([thehd[0], 0]){
364 translate([-dx, -0.1])
365 square([ dx*2, r/2 + 0.1 ]);
367 translate([ xi*dx, r ])
375 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
376 for (lobei = [ 0 : nlobes-1 ]) {
377 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
378 translate([lobex, 0, 0]) {
379 InterlockLobePlan(negative);
385 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
386 mirror([0, negative])
387 translate([slotshorter, iadj])
388 square([length - slotshorter*2, interlock_fine + iadj*2]);
392 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
393 plusth = negative * 1.0;
394 protr = interlock_fine + interlock_sq_adj;
397 z1 = -tile_th/2 - protr / interlock_fine_slope;
398 z3 = -tile_th/2 + protr / interlock_fine_slope;
400 negsign = negative ? -1 : +1;
401 yprotr = negsign * protr;
403 INREFFRAME(left_cnr, right_cnr) {
404 for (vsect = [ // zs0 zs1 ys0, ys1
405 [ -tile_th-plusth, plusth, 0, 0],
406 [ z1, z2, 0, yprotr],
407 [ z2, z3, yprotr, 0],
417 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
421 linear_extrude(height=zsd, convexity=10)
422 InterlockEdgePlan(negative, nlobes, length, !!ysd);
427 function TestPiece_holes2corners(holes) =
428 [ holes[0] + thehd_bl,
431 holes[0] + thehd_tl ];
433 module TestPiece1(){ ////toplevel
437 corners = TestPiece_holes2corners(holes);
438 rcs = R_CNR(corners,0);
441 TileBase(corners[0], corners[2]);
443 RoundEdge(corners[0], corners[1]);
444 RoundEdge(corners[3], corners[0]);
446 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
453 module TestPiece2(){ ////toplevel
457 corners = TestPiece_holes2corners(holes);
460 TileBase(corners[0], corners[2]);
462 RoundEdge(corners[0], corners[1]);
463 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
469 module TestDemo(){ ////toplevel
470 translate([ -thehd[0], 0 ])
473 translate([ +thehd[0] + demo_slop, 0 ])
477 module Machine_NewRearProfile(){
478 // figures copied out of xfig edit boxes
479 // best not to edit the posbox size if poss - just move it
480 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
481 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
482 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
483 scaleline_mm = 12+5+10+5+3;
484 sh = -[abs(posbox[0]), abs(posbox[1])];
485 rot = atan2(-sideline[0], sideline[1]);
486 sc = scaleline_mm / scaleline;
487 //echo("SH",sh,rot,sc);
488 scale(sc) rotate(rot) translate(sh){
489 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
493 module Machine_NewFrontProfile(){
494 // figures copied out of xfig edit boxes
495 // best not to edit the posbox size if poss - just move it
496 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
497 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
498 refline_mm = (11-1)*10;
499 sh = -[abs(posbox[0]), abs(posbox[1])];
500 rot = atan2(-refline[0], refline[1]);
501 sc = refline_mm / vectorlen2d(refline);
502 //echo("SH",sh,rot,sc);
503 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
504 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
508 module Machine_NewEndProfile(){
509 // figures copied out of xfig edit boxes
510 // NB that y coords are reversed - xfig origin is at bottom left
511 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
512 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
513 refline_mm = 10 * (11 - 2.5);
514 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
515 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
516 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
520 posbox = [min(posboxs[0][0],posboxs[1][0]),
521 max(posboxs[0][1],posboxs[1][1])];
523 m4_define(`MNEP_ELP',
524 `line_intersection_2d(baseline[0],baseline[1],
525 sidelines[$1][0],sidelines[$1][1])')
526 endline = [MNEP_ELP(0),MNEP_ELP(1)];
528 rot = atan2(-refline[1], -refline[0]);
529 sc = refline_mm / vectorlen2d(refline);
530 sh = (0.5 * (endline[0] + endline[1])) - posbox;
532 ellen = sc * dist2d(endline[0],endline[1]);
533 scy = cutout_l_end_y_total / ellen;
535 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
538 //%translate(1 * (posboxs[0] - posbox)) square(50);
539 //%translate(1 * (posboxs[1] - posbox)) square(50);
540 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
542 // %translate(1 * (endline[0] - posbox)) square([50,10]);
543 // %translate(1 * (endline[1] - posbox)) square([50,10]);
545 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
546 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
547 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
548 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
551 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
555 module Machine_NewEndProfileDemo(){ ////toplevel
556 translate([0,5,0]) Machine_NewEndProfile();
557 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
559 translate([0,5, 0]) Machine_NewEndProfile();
560 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
564 module Machine_NewArm(){
565 translate([0,0,-30]) linear_extrude(height=60) {
566 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
567 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
571 translate([0,d]) Machine_NewEndProfile();
578 module Machine_NewRearCurve(){
579 slant = atan2(4,210-10);
581 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
582 translate([ rearcurve_double_inrad,
584 -rearcurve_double_inrad + 10 ]){
585 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
587 Machine_NewRearProfile();
588 translate([0,-100]) Machine_NewRearProfile();
592 rotate([0,90,0]) rotate([90,0,0]) {
594 rotate_extrude(convexity=10, $fn=64)
596 translate([ 0, -rearcurve_double_inrad ])
597 Machine_NewRearProfile();
598 translate([0,0,-500])
599 cube([500,500,1000]);
602 translate([1,0,-rearcurve_double_inrad])
603 rotate([0,-90,0]) rotate([0,0,-90])
604 linear_extrude(height= rearcurve_strt_len + 1)
605 Machine_NewRearProfile();
609 module Machine_Curves(){ ////toplevel
610 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
614 translate([ -reartablet_x,
616 -reartablet_z + tablet_z_slop])
618 cube([ reartablet_x+1,
622 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
624 frontcurve_z_slop ]){
625 translate([0, -machine_rear_to_front, 0])
626 multmatrix([[1, -frontcurve_side_skew, 0, 0],
630 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
631 linear_extrude(height= 200)
632 Machine_NewFrontProfile();
634 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
636 frontcurve_z_slop ]){
637 translate([ rearcurve_strt_len,
640 Machine_NewRearCurve();
645 module TestStrapSlots(){
646 pegwidth = teststrap_peg[0];
647 for (pos = teststrapslots_at) {
649 translate(concat(pos,[0]))
650 for (mx = [0,1]) mirror([mx,0,0]) {
651 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
652 cube(concat(teststrap,[40]));
657 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
659 module TestStrapPeg_Short(){ ////toplevel
660 TestStrapPeg_any(35);
663 module TestStrapPeg_Long(){ ////toplevel
664 TestStrapPeg_any(60);
667 module Machine(){ ////toplevel
674 module MachineEnvelope(){
676 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
677 y_arm_t = cutout_tile11_y;
678 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
679 y_crv_b = y_arm_t + rearcurve_avoid_y;
681 translate([0,0,-50]) linear_extrude(height= 100){
682 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
683 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
687 module Leg(){ ////toplevel
692 cylinder(r= leg_big_dia/2, height=leg_top_flat_z, $fn=100);
693 translate([0,0, -leg_height])
694 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
696 for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
698 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
699 cube([ leg_fin_top_rad - 0.1,
703 translate([0, -leg_fin_bot_w/2, -leg_height])
704 cube([ leg_fin_bot_rad,
706 leg_fin_bot_flat_z ]);
710 mirror([0,0,1]) translate([0,0,-1])
711 cylinder(r= leg_hole_dia/2, h=leg_height+2, $fn=30);
715 function Rectangle_corners(c0, sz) =
716 // returns the corners of a rectangle from c0 to c0+sz
717 // if sz is positive, the corners are anticlockwise starting with c0
720 c0 + [ sz[0], sz[1] ],
723 function Rectangle_corners2posts(c) =
729 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
731 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
733 module Tile02(){ ////toplevel
735 c0 = tile02_tr + -sz;
736 c = Rectangle_corners(c0, sz);
737 posts = Rectangle_corners2posts(c);
741 Rectangle_TileBase(c);
743 RoundEdge(R_EDGE(c,0));
744 RoundEdge(R_EDGE(c,3));
745 InterlockEdge(R_EDGE(c,2), 0);
747 InterlockEdge(R_EDGE(c,1), 1);
754 module Tile12(){ ////toplevel
756 c0 = tile02_tr + [-sz[0], 0];
757 c = Rectangle_corners(c0, sz);
758 posts = Rectangle_corners2posts(c);
762 Rectangle_TileBase(c);
764 RoundEdge(R_EDGE(c,2));
765 RoundEdge(R_EDGE(c,3));
767 InterlockEdge(R_EDGE(c,0), 1);
768 InterlockEdge(R_EDGE(c,1), 1);
775 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
776 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
777 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
779 module Tile11(){ ////toplevel
781 c0 = tile01_tr + [-sz[0],0];
782 c = Rectangle_corners(c0, sz);
783 cnr_posts = Rectangle_corners2posts(c);
785 Posts_interpolate_one(cnr_posts[0],
786 cnr_posts[1] - [cutout_l_end_x, 0]),
787 [ cnr_posts[1] + [0, cutout_tile11_y],
793 Rectangle_TileBase(c);
795 RoundEdge(R_EDGE(c,2));
796 InterlockEdge(R_EDGE(c,3));
798 InterlockEdge(c[0], tile_01_11_cnr, 1);
799 InterlockEdge(tile_11_10_cnr, c[2], 1);
805 module Tile01(){ ////toplevel
807 c0 = tile01_tr + -sz;
808 c = Rectangle_corners(c0, sz);
809 cnr_posts = Rectangle_corners2posts(c);
811 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
812 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
813 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
818 Rectangle_TileBase(c);
820 RoundEdge(R_EDGE(c,0));
821 InterlockEdge(tile_01_11_cnr, c[3]);
822 InterlockEdge(R_EDGE(c,3));
825 InterlockEdge(c[1], tile_01_00_cnr, 1);
830 module Tile10(){ ////toplevel
832 c0 = tile01_tr + [0,0];
833 c = Rectangle_corners(c0, sz);
834 cnr_posts = Rectangle_corners2posts(c);
835 cty = cutout_tile11_y;
836 rcy = cty + rearcurve_avoid_y;
837 posts = [ cnr_posts[0] + [ 0, cty ],
838 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
839 cnr_posts[1] + [ 0, rcy ],
845 Rectangle_TileBase(c);
847 RoundEdge(R_EDGE(c,1));
848 RoundEdge(R_EDGE(c,2));
849 InterlockEdge(c[3], tile_11_10_cnr);
858 module Tile00(){ ////toplevel
860 c0 = tile01_tr + [0,-sz[1]];
861 c = Rectangle_corners(c0, sz);
863 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
864 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
867 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
869 cnr_posts = Rectangle_corners2posts(c);
870 cty = cutout_tile01_y;
871 rcy = cty + frontcurve_avoid_y;
872 posts = [ cnr_posts[0],
874 0.5 * (cnr_posts[0] + cnr_posts[1]),
875 cnr_posts[2] + [ 0, -rcy ],
876 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
877 cnr_posts[3] + [ 0, -cty ]
880 rc2 = [c1bis,c2bis,c[1]];
885 Rectangle_TileBase(c);
887 RoundEdge(R_EDGE(c,0));
888 RoundEdge(c[1], c1bis);
889 InterlockEdge(tile_01_00_cnr, c[0]);
892 translate([0,0,-20]) linear_extrude(height=40) {
893 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
896 RoundEdge(c1bis, c2bis);
906 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
907 c = Rectangle_corners(c0, sz);
909 bsz = sz + [bracexx,0,0];
912 Rectangle_TileBase(c);
914 translate(concat(c0, [-brace[2] + 0.1])){
916 cube(concat(bsz, [brace[2]]) - [5,0,0]);
917 translate(brace + [0,0, -25])
918 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
922 RoundEdge(R_EDGE(c,1));
928 module FitTest_PairLink(cut=false){ ////toplevel
929 cy0=-55; cy1=85; cx=132;
932 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
938 straphole_x_max = legrad/sqrt(2) + footrad_max;
939 dz = cut ? adj_neg_slop : 0;
941 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
942 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
944 for (endy=[cy0,cy1]) {
946 translate([cx,endy,dz]){
948 for (rot=[45:90:315]) rotate(rot) {
949 translate([legrad,0,0]){
951 cylinder(r= footrad_max, h=1);
952 translate([0,0,-footrad_depth])
953 cylinder(r= footrad_min, h=1);
957 cylinder(r= footrad_min +
958 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
963 for (rot=[45,135]) rotate(rot) {
966 translate([s*legrad,0,0])
967 cylinder(r= footrad_max, h=bar[1]);
973 for (rot=[0,180]) rotate(rot) {
974 translate([ straphole_x_max - strap[0]/2, 0,0 ])
975 cube(concat(strap,[20]), center=true);
982 module FitTest_RearCurve(){ ////toplevel
984 FitTest_general([100,0], [180,100]);
985 FitTest_PairLink(true);
990 module FitTest_FrontCurve(){ ////toplevel
996 translate([0,0,-8]) linear_extrude(height=18) {
997 translate(p0) square(sz);
998 translate(teststrapslots_at[3])
999 scale(2* [ teststrap_peg[0], teststrap[1] ])
1000 circle(r=1, $fn=20);
1003 FitTest_PairLink(true);
1008 module FitTest_Entire(){ ////toplevel
1011 szfront = [243,szrear[1]];
1013 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1014 FitTest_PairLink(true);
1015 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1016 cube([100, -p0[1], 80]);
1020 FitTest_RearCurve();
1021 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1023 FitTest_FrontCurve();
1026 module FitTest_EntireDemo(){ ////toplevel
1031 module FitTest_EndEnd(){ ////toplevel
1034 sz2 = [136,68] - p0;
1036 FitTest_general(p0, sz);
1037 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1038 cube([ sz2[0] +1, 50, 20 ]);
1042 module FitTest_PairDemo(){ ////toplevel
1046 %FitTest_FrontCurve();
1047 %FitTest_RearCurve();
1053 FitTest_FrontCurve();
1054 FitTest_RearCurve();
1056 #FitTest_PairLink(true);
1062 module RoundCornerDemo_plat(cnr){
1063 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1066 module RoundCornerDemo(){ ////toplevel
1067 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1068 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1069 translate([25,0,0]) RoundCornerAdd(cnr);
1070 translate([-25,0,0]) RoundCornerCut(cnr);
1071 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1073 RoundCornerDemo_plat(cnr);
1074 RoundCornerCut(cnr);
1076 RoundCornerAdd(cnr);
1079 module Demo(){ ////toplevel
1080 translate(demo_slop*[-2,1]) color("blue") Tile12();
1081 translate(demo_slop*[-2,0]) color("red") Tile02();
1082 translate(demo_slop*[-2,1]) color("orange") Tile11();
1083 translate(demo_slop*[-2,0]) color("purple") Tile01();
1084 translate(demo_slop*[-3,1]) color("blue") Tile10();
1085 translate(demo_slop*[-3,0]) color("red") Tile00();
1087 // Can also do this, to print reference sheet:
1088 // load this into openscad
1089 // select Ctrl-4 view, view all, scale appropriately
1090 // import sewing-table,Demo-flat.png
1091 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1099 //Machine_NewRearProfile();
1100 //Machine_NewRearCurve();
1101 //Machine_NewFrontProfile();
1102 //Machine_NewEndProfile();
1103 //Machine_NewEndProfileDemo();
1107 //MachineEnvelope();