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 * [ (i % nrows),
511 module Machine_NewRearProfile(){
512 // figures copied out of xfig edit boxes
513 // best not to edit the posbox size if poss - just move it
514 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
515 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
516 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
517 scaleline_mm = 12+5+10+5+3;
518 sh = -[abs(posbox[0]), abs(posbox[1])];
519 rot = atan2(-sideline[0], sideline[1]);
520 sc = scaleline_mm / scaleline;
521 //echo("SH",sh,rot,sc);
522 scale(sc) rotate(rot) translate(sh){
523 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
527 module Machine_NewFrontProfile(){
528 // figures copied out of xfig edit boxes
529 // best not to edit the posbox size if poss - just move it
530 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
531 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
532 refline_mm = (11-1)*10;
533 sh = -[abs(posbox[0]), abs(posbox[1])];
534 rot = atan2(-refline[0], refline[1]);
535 sc = refline_mm / vectorlen2d(refline);
536 //echo("SH",sh,rot,sc);
537 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
538 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
542 module Machine_NewEndProfile(){
543 // figures copied out of xfig edit boxes
544 // NB that y coords are reversed - xfig origin is at bottom left
545 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
546 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
547 refline_mm = 10 * (11 - 2.5);
548 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
549 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
550 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
554 posbox = [min(posboxs[0][0],posboxs[1][0]),
555 max(posboxs[0][1],posboxs[1][1])];
557 m4_define(`MNEP_ELP',
558 `line_intersection_2d(baseline[0],baseline[1],
559 sidelines[$1][0],sidelines[$1][1])')
560 endline = [MNEP_ELP(0),MNEP_ELP(1)];
562 rot = atan2(-refline[1], -refline[0]);
563 sc = refline_mm / vectorlen2d(refline);
564 sh = (0.5 * (endline[0] + endline[1])) - posbox;
566 ellen = sc * dist2d(endline[0],endline[1]);
567 scy = cutout_l_end_y_total / ellen;
569 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
572 //%translate(1 * (posboxs[0] - posbox)) square(50);
573 //%translate(1 * (posboxs[1] - posbox)) square(50);
574 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
576 // %translate(1 * (endline[0] - posbox)) square([50,10]);
577 // %translate(1 * (endline[1] - posbox)) square([50,10]);
579 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
580 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
581 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
582 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
585 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
589 module Machine_NewEndProfileDemo(){ ////toplevel
590 translate([0,5,0]) Machine_NewEndProfile();
591 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
593 translate([0,5, 0]) Machine_NewEndProfile();
594 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
598 module Machine_NewArm(){
599 translate([0,0,-30]) linear_extrude(height=60) {
600 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
601 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
605 translate([0,d]) Machine_NewEndProfile();
612 module Machine_NewRearCurve(){
613 slant = atan2(4,210-10);
615 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
616 translate([ rearcurve_double_inrad,
618 -rearcurve_double_inrad + 10 ]){
619 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
621 Machine_NewRearProfile();
622 translate([0,-100]) Machine_NewRearProfile();
626 rotate([0,90,0]) rotate([90,0,0]) {
628 rotate_extrude(convexity=10, $fn=64)
630 translate([ 0, -rearcurve_double_inrad ])
631 Machine_NewRearProfile();
632 translate([0,0,-500])
633 cube([500,500,1000]);
636 translate([1,0,-rearcurve_double_inrad])
637 rotate([0,-90,0]) rotate([0,0,-90])
638 linear_extrude(height= rearcurve_strt_len + 1)
639 Machine_NewRearProfile();
643 module Machine_Curves(){ ////toplevel
644 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
648 translate([ -reartablet_x,
650 -reartablet_z + tablet_z_slop])
652 cube([ reartablet_x+1,
656 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
658 frontcurve_z_slop ]){
659 translate([0, -machine_rear_to_front, 0])
660 multmatrix([[1, -frontcurve_side_skew, 0, 0],
664 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
665 linear_extrude(height= 200)
666 Machine_NewFrontProfile();
668 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
670 frontcurve_z_slop ]){
671 translate([ rearcurve_strt_len,
674 Machine_NewRearCurve();
679 module TestStrapSlots(){
680 pegwidth = teststrap_peg[0];
681 for (pos = teststrapslots_at) {
683 translate(concat(pos,[0]))
684 for (mx = [0,1]) mirror([mx,0,0]) {
685 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
686 cube(concat(teststrap,[40]));
691 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
693 module TestStrapPeg_Short(){ ////toplevel
694 TestStrapPeg_any(35);
697 module TestStrapPeg_Long(){ ////toplevel
698 TestStrapPeg_any(60);
701 module Machine(){ ////toplevel
708 module MachineEnvelope(){
710 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
711 y_arm_t = cutout_tile11_y;
712 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
713 y_crv_b = y_arm_t + rearcurve_avoid_y;
715 translate([0,0,-50]) linear_extrude(height= 100){
716 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
717 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
721 module Leg(){ ////toplevel
726 cylinder(r= leg_big_dia/2, h=leg_top_flat_z, $fn=100);
727 translate([0,0, -leg_top_thick])
728 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
731 translate([0,0,-leg_height])
732 cylinder(r= leg_bot_mid_dia/2, h=leg_bot_thick);
733 for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
735 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
736 cube([ leg_fin_top_rad - 0.1,
740 translate([0, -leg_fin_bot_w/2, -leg_height])
741 cube([ leg_fin_bot_rad,
743 leg_fin_bot_flat_z ]);
747 mirror([0,0,1]) translate([0,0,-1])
748 cylinder(r= leg_hole_dia/2,
749 h= (!TEST ? leg_height+2 : leg_height/2),
751 mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
753 cylinder(r= (!TEST ? leg_midspc_dia/2 : 0.1),
754 h= leg_height - leg_top_thick - leg_bot_thick + 0.2,
757 cylinder(r= leg_midspc_dia/2,
758 h= leg_height - leg_top_thick - leg_bot_thick
759 + (!TEST ? 0.2 : -leg_midspc_dia/2),
763 for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
764 mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
765 cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
770 function Rectangle_corners(c0, sz) =
771 // returns the corners of a rectangle from c0 to c0+sz
772 // if sz is positive, the corners are anticlockwise starting with c0
775 c0 + [ sz[0], sz[1] ],
778 function Rectangle_corners2posts(c) =
784 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
786 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
788 module Tile02(){ ////toplevel
790 c0 = tile02_tr + -sz;
791 c = Rectangle_corners(c0, sz);
792 posts = Rectangle_corners2posts(c);
796 Rectangle_TileBase(c);
798 RoundEdge(R_EDGE(c,0));
799 RoundEdge(R_EDGE(c,3));
800 InterlockEdge(R_EDGE(c,2), 0);
802 InterlockEdge(R_EDGE(c,1), 1);
809 module Tile12(){ ////toplevel
811 c0 = tile02_tr + [-sz[0], 0];
812 c = Rectangle_corners(c0, sz);
813 posts = Rectangle_corners2posts(c);
817 Rectangle_TileBase(c);
819 RoundEdge(R_EDGE(c,2));
820 RoundEdge(R_EDGE(c,3));
822 InterlockEdge(R_EDGE(c,0), 1);
823 InterlockEdge(R_EDGE(c,1), 1);
830 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
831 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
832 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
834 module Tile11(){ ////toplevel
836 c0 = tile01_tr + [-sz[0],0];
837 c = Rectangle_corners(c0, sz);
838 cnr_posts = Rectangle_corners2posts(c);
840 Posts_interpolate_one(cnr_posts[0],
841 cnr_posts[1] - [cutout_l_end_x, 0]),
842 [ cnr_posts[1] + [0, cutout_tile11_y],
848 Rectangle_TileBase(c);
850 RoundEdge(R_EDGE(c,2));
851 InterlockEdge(R_EDGE(c,3));
853 InterlockEdge(c[0], tile_01_11_cnr, 1);
854 InterlockEdge(tile_11_10_cnr, c[2], 1);
860 module Tile01(){ ////toplevel
862 c0 = tile01_tr + -sz;
863 c = Rectangle_corners(c0, sz);
864 cnr_posts = Rectangle_corners2posts(c);
866 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
867 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
868 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
873 Rectangle_TileBase(c);
875 RoundEdge(R_EDGE(c,0));
876 InterlockEdge(tile_01_11_cnr, c[3]);
877 InterlockEdge(R_EDGE(c,3));
880 InterlockEdge(c[1], tile_01_00_cnr, 1);
885 module Tile10(){ ////toplevel
887 c0 = tile01_tr + [0,0];
888 c = Rectangle_corners(c0, sz);
889 cnr_posts = Rectangle_corners2posts(c);
890 cty = cutout_tile11_y;
891 rcy = cty + rearcurve_avoid_y;
892 posts = [ cnr_posts[0] + [ 0, cty ],
893 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
894 cnr_posts[1] + [ 0, rcy ],
900 Rectangle_TileBase(c);
902 RoundEdge(R_EDGE(c,1));
903 RoundEdge(R_EDGE(c,2));
904 InterlockEdge(c[3], tile_11_10_cnr);
913 module Tile00(){ ////toplevel
915 c0 = tile01_tr + [0,-sz[1]];
916 c = Rectangle_corners(c0, sz);
918 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
919 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
922 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
924 cnr_posts = Rectangle_corners2posts(c);
925 cty = cutout_tile01_y;
926 rcy = cty + frontcurve_avoid_y;
927 posts = [ cnr_posts[0],
929 0.5 * (cnr_posts[0] + cnr_posts[1]),
930 cnr_posts[2] + [ 0, -rcy ],
931 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
932 cnr_posts[3] + [ 0, -cty ]
935 rc2 = [c1bis,c2bis,c[1]];
940 Rectangle_TileBase(c);
942 RoundEdge(R_EDGE(c,0));
943 RoundEdge(c[1], c1bis);
944 InterlockEdge(tile_01_00_cnr, c[0]);
947 translate([0,0,-20]) linear_extrude(height=40) {
948 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
951 RoundEdge(c1bis, c2bis);
961 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
962 c = Rectangle_corners(c0, sz);
964 bsz = sz + [bracexx,0,0];
967 Rectangle_TileBase(c);
969 translate(concat(c0, [-brace[2] + 0.1])){
971 cube(concat(bsz, [brace[2]]) - [5,0,0]);
972 translate(brace + [0,0, -25])
973 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
977 RoundEdge(R_EDGE(c,1));
983 module FitTest_PairLink(cut=false){ ////toplevel
984 cy0=-55; cy1=85; cx=132;
987 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
993 straphole_x_max = legrad/sqrt(2) + footrad_max;
994 dz = cut ? adj_neg_slop : 0;
996 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
997 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
999 for (endy=[cy0,cy1]) {
1001 translate([cx,endy,dz]){
1003 for (rot=[45:90:315]) rotate(rot) {
1004 translate([legrad,0,0]){
1006 cylinder(r= footrad_max, h=1);
1007 translate([0,0,-footrad_depth])
1008 cylinder(r= footrad_min, h=1);
1011 translate([0,0,-10])
1012 cylinder(r= footrad_min +
1013 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
1018 for (rot=[45,135]) rotate(rot) {
1021 translate([s*legrad,0,0])
1022 cylinder(r= footrad_max, h=bar[1]);
1028 for (rot=[0,180]) rotate(rot) {
1029 translate([ straphole_x_max - strap[0]/2, 0,0 ])
1030 cube(concat(strap,[20]), center=true);
1037 module FitTest_RearCurve(){ ////toplevel
1039 FitTest_general([100,0], [180,100]);
1040 FitTest_PairLink(true);
1045 module FitTest_FrontCurve(){ ////toplevel
1051 translate([0,0,-8]) linear_extrude(height=18) {
1052 translate(p0) square(sz);
1053 translate(teststrapslots_at[3])
1054 scale(2* [ teststrap_peg[0], teststrap[1] ])
1055 circle(r=1, $fn=20);
1058 FitTest_PairLink(true);
1063 module FitTest_Entire(){ ////toplevel
1066 szfront = [243,szrear[1]];
1068 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1069 FitTest_PairLink(true);
1070 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1071 cube([100, -p0[1], 80]);
1075 FitTest_RearCurve();
1076 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1078 FitTest_FrontCurve();
1081 module FitTest_EntireDemo(){ ////toplevel
1086 module FitTest_EndEnd(){ ////toplevel
1089 sz2 = [136,68] - p0;
1091 FitTest_general(p0, sz);
1092 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1093 cube([ sz2[0] +1, 50, 20 ]);
1097 module FitTest_PairDemo(){ ////toplevel
1101 %FitTest_FrontCurve();
1102 %FitTest_RearCurve();
1108 FitTest_FrontCurve();
1109 FitTest_RearCurve();
1111 #FitTest_PairLink(true);
1117 module RoundCornerDemo_plat(cnr){
1118 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1121 module RoundCornerDemo(){ ////toplevel
1122 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1123 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1124 translate([25,0,0]) RoundCornerAdd(cnr);
1125 translate([-25,0,0]) RoundCornerCut(cnr);
1126 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1128 RoundCornerDemo_plat(cnr);
1129 RoundCornerCut(cnr);
1131 RoundCornerAdd(cnr);
1134 module Demo(){ ////toplevel
1135 translate(demo_slop*[-2,1]) color("blue") Tile12();
1136 translate(demo_slop*[-2,0]) color("red") Tile02();
1137 translate(demo_slop*[-2,1]) color("orange") Tile11();
1138 translate(demo_slop*[-2,0]) color("purple") Tile01();
1139 translate(demo_slop*[-3,1]) color("blue") Tile10();
1140 translate(demo_slop*[-3,0]) color("red") Tile00();
1142 // Can also do this, to print reference sheet:
1143 // load this into openscad
1144 // select Ctrl-4 view, view all, scale appropriately
1145 // import sewing-table,Demo-flat.png
1146 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1154 //Machine_NewRearProfile();
1155 //Machine_NewRearCurve();
1156 //Machine_NewFrontProfile();
1157 //Machine_NewEndProfile();
1158 //Machine_NewEndProfileDemo();
1162 //MachineEnvelope();