chiark / gitweb /
sewing-table: TEST commitid: rotate so counter is in edgy bit
[reprap-play.git] / sewing-table.scad.m4
index c84f359..80d86c8 100644 (file)
@@ -18,21 +18,121 @@ screw_big_len = 4.0;
 
 round_edge_rad = 2.0;
 
+round_cnr_rad = 10;
+
 interlock_dia = 10;
+interlock_fine = 0.66;
+
+interlock_fine_slope = 1.0;
+interlock_fine_lenslop = 1.0;
+
+demo_slop = 0.1;
+
+// cutout
+
+machine_rear_to_front = 85;
+
+machine_rear_profile = [
+                       [ -  0,  -0.00 ],
+                       [ -  2,  -0.10 ],
+                       [ -  4,  -0.20 ],
+                       [ -  5,  -0.30 ],
+                       [ -  6,  -0.40 ],
+                       [ -  7,  -0.50 ],
+                       [ -  8,  -0.75 ],
+                       [ - 10,  -1.50 ],
+                       [ - 12,  -2.25 ],
+                       [ - 14,  -3.25 ],
+                       [ - 16,  -4.25 ],
+                       [ - 18,  -5.75 ],
+                       [ - 20,  -8.00 ]
+                       ];
+
+machine_front_profile =  [
+                         [  128,  -3.70,  ],
+                         [  124,  -2.90,  ],
+                         [  120,  -2.45,  ],
+                         [  116,  -2.10,  ],
+                         [  112,  -1.80,  ],
+                         [  108,  -1.55,  ],
+                         [  104,  -1.25,  ],
+                         [  100,  -1.00,  ],
+                         [   96,  -0.80,  ],
+                         [   92,  -0.65,  ],
+                         [   88,  -0.55,  ],
+                         [   84,  -0.50,  ]
+                         ];
+
+cutout_l_end_y_front_slop = 0.5;
+cutout_l_end_y_rear_slop = 0.5;
+cutout_l_end_x_slop = 0.25;
+
+cutout_l_end_x = 22;
+cutout_l_end_y = machine_rear_to_front;
+cutout_l_end_curve = 1;
+cutout_l_end_y_total = cutout_l_end_y
+  + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
+
+tile02_tr = [-250, 0];
+tile01_tr = [  0, 0];
+
+cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
+cutout_tile11_x = cutout_l_end_x + cutout_l_end_curve;
+cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
+
+// front and rear curves
+
+rearedge_len = 170;
+
+rearcurve_strt_len = 52;
+
+rearcurve_z_slop = 0.75;
+
+rearcurve_avoid_y = 35;
+
+rearcurve_double_inrad = 26.10 + 8.04;
+
+reartablet_z = 2.54;
+reartablet_x = 5 + 1;
+reartablet_y = 5;
+
+frontcurve_side_skew = 3.5 / 72;
+frontcurve_avoid_y = 70;
+frontcurve_z_slop = 0.75;
 
 // calculated
 
+TEST = false;
+
 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
 
-echo(str("HOLES IN PLY ctr dist from edge = ", ply_edge_hole_dist));
+echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
 
 hole_slop = (ply_hole_dia - post_dia)/2;
 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
+
+echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
+        tile_hard_edge_hole_dist));
+
+echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
+        tile_hard_edge_hole_dist + round_edge_rad));
+
 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
+thehd_tr = thehd;
+thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
+thehd_bl = -thehd_tr;
+thehd_br = -thehd_tl;
 
 interlock_rad = interlock_dia/2;
 interlock_negative_rad = interlock_rad + 0.125;
 
+interlock_sq_adj = 0.2; // arbitrary
+
+first_front = machine_front_profile[len(machine_front_profile)-1];
+
+m4_define(`POST_TCROSSSZ',
+          `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
+
 module Post(){
   mirror([0,0,1]) {
     difference(){
@@ -42,32 +142,60 @@ module Post(){
        cylinder(r= screw_dia/2, h= ply_th, $fn=20);
       }
     }
+    if (TEST) {
+      translate([0,0, tile_th/2]) {
+       cube([post_dia,      POST_TCROSSSZ, tile_th], center=true);
+       cube([POST_TCROSSSZ, post_dia,      tile_th], center=true);
+      }
+    }
   }
 }
 
 module Posts(posts) {
   for (p= posts) {
-    translate([p[0], p[1], 0])
+    translate(concat(p, [0]))
       Post();
   }
 }
 
-module TileBase(botleft_post, topright_post){
-  botleft = botleft_post - thehd;
-  size = topright_post - botleft_post + thehd * 2;
+module TileBase(botleft, topright){
+  size = topright - botleft;
+  botleft_post = botleft + thehd_tr;
+  topright_post = topright + thehd_bl;
   difference(){
     mirror([0,0,1])
-      translate([botleft[0], botleft[1], 0])
-      cube([size[0], size[1], tile_th]);
-    translate( [ botleft_post[0], botleft_post[1], -tile_th ]
-              + 0.5 * [ post_dia, post_dia, 0 ] )
-      Commitid_BestCount_M( topright_post-botleft_post
-                           + [0, thehd[1] ]
-                           + [-post_dia,-post_dia] );
+      translate(concat(botleft, [0]))
+      cube(concat(size, [tile_th]));
+    if (!TEST) {
+      translate( concat(botleft_post, [ -tile_th ])
+                + 0.5 * [ post_dia, post_dia, 0 ] )
+       Commitid_BestCount_M( topright_post-botleft_post
+                             + [-post_dia,-post_dia]
+                             + [0, thehd[1]]);
+    }
+    if (TEST) {
+      crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
+      cidsz = [ size[0] - 2*crossoff, thehd[1] ];
+      translate( concat(botleft + [crossoff, 0] + cidsz, [0]) )
+       rotate([0,0,180])
+       Commitid_BestCount(cidsz);
+      difference(){
+       mirror([0,0,1]) {
+         translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
+           cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
+         translate(concat(botleft_post, [-1]))
+           cube(concat(topright_post-botleft_post, [tile_th+2]));
+       }
+       minkowski(){
+         Machine();
+         cube(max(test_edge, tile_hard_edge_hole_dist)*2, center=true);
+       }
+      }
+    }
   }
 }
 
-m4_dnl  INREFFRAME(left_post, right_post, morevars) { body; }
+m4_dnl  INREFFRAME(left_cnr, right_cnr, morevars) { body; }
 m4_define(`INREFFRAME',`
   length_vec = ($2) - ($1);
   length = dist2d([0,0], length_vec);
@@ -81,99 +209,484 @@ m4_define(`INREFFRAME',`
   multmatrix(m)
 ')
 
-m4_dnl  INREFFRAME(left_post, right_post, morevars)
+m4_dnl  INREFFRAME(left_cnr, right_cnr, morevars)
 m4_dnl    INREFFRAME_EDGE { body; }
 m4_define(`INREFFRAME_EDGE',`
-  translate([-thehd[0], -thehd[1], -round_edge_rad])
+  translate([0,0, -round_edge_rad])
 ')
 
-module RoundEdge(left_post, right_post) {
-  INREFFRAME(left_post, right_post,
-             `tlength = length + thehd[0] * 2;') m4_dnl '
+module RoundEdge(left_cnr, right_cnr) {
+  INREFFRAME(left_cnr, right_cnr)
     INREFFRAME_EDGE {
     difference(){
       rotate([0,90,0])
-       cylinder(r= round_edge_rad, h= tlength, $fn=50);
+       cylinder(r= round_edge_rad, h= length, $fn=50);
       translate([-1, 0, -20])
-       cube([tlength+2, 20, 20]);
+       cube([length+2, 20, 20]);
     }
   }
 }
 
-module RoundLeftCorner(this_post, right_post) {
-  INREFFRAME(this_post, right_post) INREFFRAME_EDGE {
+module RoundCornerCut(ci) {
+  // ci should be [this_cnr, right_cnr]
+  // where right_cnr is to the right (ie, anticlockwise)
+  this_cnr = ci[0];
+  right_cnr = ci[1];
+  offr= round_cnr_rad - round_edge_rad;
+  INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
     difference(){
-      sphere(r= round_edge_rad, $fn=60);
-      translate([0,0, -20])
-       cube([20,20,20]);
+      cube(offr*2 - 0.1, center=true);
+      translate([offr, offr, 0])
+       cylinder(center=true, h=20, r= offr);
+    }
+  }
+}
+
+module RoundCornerAdd(ci) {
+  this_cnr = ci[0];
+  right_cnr = ci[1];
+  bigr = round_cnr_rad - round_edge_rad;
+  INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
+    intersection(){
+      cube(bigr*2 + 0.1, center=true);
+      translate([bigr, bigr, 0])
+       rotate_extrude(convexity=10, $fn=50)
+       translate([bigr, 0])
+       difference(){
+         circle(r= round_edge_rad, $fn=50);
+         mirror([1,1])
+           square([20,20]);
+        }
     }
   }
 }
 
-module InterlockCore(r, plusth, ymir) {
+module InterlockLobePlan(negative) {
+  r = negative ? interlock_negative_rad : interlock_rad;
+  ymir = negative ? 0 : 1;
+
   dx = sqrt(3) * r;
   $fn= 80;
-  translate([0, -thehd[1], plusth]){
-    mirror([0,ymir,0]){
-      mirror([0,0,1]){
-       linear_extrude(height=tile_th+plusth*2, convexity=10){
-         circle(r=r);
-         difference(){
-           translate([-dx, -0.1])
-             square([ dx*2, r/2 + 0.1 ]);
-           for (xi = [-1, 1]) {
-             translate([ xi*dx, r ])
-               circle(r=r);
-           }
-         }
+  translate([thehd[0], 0]){
+    mirror([0,ymir]){
+      circle(r=r);
+      difference(){
+       translate([-dx, -0.1])
+         square([ dx*2, r/2 + 0.1 ]);
+       for (xi = [-1, 1]) {
+         translate([ xi*dx, r ])
+           circle(r=r);
        }
       }
     }
   }
 }
 
-module InterlockNegative(this_post, right_post) {
-  INREFFRAME(this_post, right_post)
-    InterlockCore(interlock_negative_rad, 1, 0);
+module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
+  for (lobei = [ 0 : nlobes-1 ]) {
+    lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
+    translate([lobex, 0, 0]) {
+      InterlockLobePlan(negative);
+    }
+  }
+
+  if (dosquare) {
+    iadj = 0;
+    slotshorter = negative ? -0.1 : interlock_fine_lenslop;
+    mirror([0, negative])
+      translate([slotshorter, iadj])
+      square([length - slotshorter*2, interlock_fine + iadj*2]);
+  }
 }
 
-module Interlock(this_post, right_post) {
-  INREFFRAME(this_post, right_post)
-    InterlockCore(interlock_rad, 0, 1);
+module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
+  plusth = negative * 1.0;
+  protr = interlock_fine + interlock_sq_adj;
+
+  z2 = -tile_th/2;
+  z1 = -tile_th/2 - protr / interlock_fine_slope;
+  z3 = -tile_th/2 + protr / interlock_fine_slope;
+
+  negsign = negative ? -1 : +1;
+  yprotr = negsign * protr;
+
+  INREFFRAME(left_cnr, right_cnr) {
+    for (vsect = [ // zs0            zs1      ys0,            ys1
+                 [ -tile_th-plusth, plusth,  0,              0],
+                 [ z1,              z2,      0, yprotr],
+                 [ z2,              z3,      yprotr, 0],
+                 ]) {
+      zs0 = vsect[0];
+      zs1 = vsect[1];
+      zsd = zs1-zs0;
+      ys0 = vsect[2];
+      ys1 = vsect[3];
+      ysd = ys1-ys0;
+      sl = ysd/zsd;
+      m = [ [ 1,0,   0,    0 ],
+           [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
+           [ 0,0,   1,  zs0 ],
+           [ 0,0,   0,    1 ] ];
+      multmatrix(m)
+       linear_extrude(height=zsd, convexity=10)
+       InterlockEdgePlan(negative, nlobes, length, !!ysd);
+    }
+  }
 }
 
+function TestPiece_holes2corners(holes) =
+  [ holes[0] + thehd_bl,
+    holes[1] + thehd_br,
+    holes[1] + thehd_tr,
+    holes[0] + thehd_tl ];
+
 module TestPiece1(){ ////toplevel
   holes = [ [-100, 0],
            [   0, 0]
            ];
+  corners = TestPiece_holes2corners(holes);
+  rcs = [corners[0], corners[1]];
   difference(){
-    TileBase(holes[0], holes[1]);
-    InterlockNegative(holes[1], holes[1] + [0,1]);
+    union(){
+      TileBase(corners[0], corners[2]);
+      Posts(holes);
+      RoundEdge(corners[0], corners[1]);
+      RoundEdge(corners[3], corners[0]);
+    }
+    InterlockEdge(corners[1], corners[2], 1, nlobes=1);
+    RoundCornerCut(rcs);
   }
-  Posts(holes);
-  RoundEdge(holes[0], holes[1]);
-  RoundEdge(holes[0] + [ 0, 0.1 ], holes[0]);
-  RoundLeftCorner(holes[0], holes[1]);
+  RoundCornerAdd(rcs);
 }
 
 module TestPiece2(){ ////toplevel
   holes = [ [   0, 0],
            [  50, 0]
            ];
-  TileBase(holes[0], holes[1]);
+  corners = TestPiece_holes2corners(holes);
+  TileBase(corners[0], corners[2]);
   Posts(holes);
-  RoundEdge(holes[0], holes[1]);
-  Interlock(holes[0], holes[0] + [0, -1]);
+  RoundEdge(corners[0], corners[1]);
+  InterlockEdge(corners[3], corners[0], 0, nlobes=1);
 }
 
-module Demo(){
+module TestDemo(){ ////toplevel
   translate([ -thehd[0], 0 ])
     color("blue")
     TestPiece1();
-  translate([ +thehd[0], 0 ])
+  translate([ +thehd[0] + demo_slop, 0 ])
     TestPiece2();
 }
+
+module Machine_Arm(){
+  ysz = cutout_l_end_y_total;
+  // assume the round end is arc of a circle
+  chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
+  endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
+  
+  translate([0,0,-30]) linear_extrude(height=60) {
+    translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
+      intersection(){
+       translate([-100, -ysz/2])
+         square([400, ysz]);
+       translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
+         circle(r=endrad, $fa=0.01,$fd=5);
+      }
+    }
+  }
+}
+
+module Machine_Profile(){
+  first_rear = machine_rear_profile[0];
+  below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
+  pol = concat( machine_rear_profile,
+               [ below_point ],
+               machine_front_profile);
+  skew_angle = atan2( first_front[1] - first_rear[1],
+                     first_front[0] - first_rear[0] );
+  echo(below_point, pol, skew_angle);
+  hull(){
+    for (z=[0,-40]) {
+      translate([0,z]) {
+       //scale([1,5])
+       rotate([0,0, -skew_angle ]){
+         //translate( - first_front )
+         polygon(pol);
+       }
+      }
+    }
+  }
+}
+
+module Machine_RearProfile(){
+  intersection(){
+    Machine_Profile();
+    translate([ -200 + machine_rear_to_front/2, -100 ]) {
+      square([200,200]);
+    }
+  }
+}
+
+module Machine_FrontProfile(){
+  intersection(){
+    Machine_Profile();
+    translate([ machine_rear_to_front/2, -100 ]) {
+      square([200,200]);
+    }
+  }
+}
+
+module Machine_Curves(){ ////toplevel
+  translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
+             cutout_tile11_y,
+             0 ]){
+    //%cube([20,20,20]);
+    translate([ -reartablet_x,
+               -1,
+               -reartablet_z])
+      mirror([0,0,1])
+      cube([ reartablet_x+1,
+            reartablet_y+1,
+            20 ]);
+  }
+  translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
+             cutout_tile11_y,
+             frontcurve_z_slop ]){
+    translate([ 0, -first_front[0] , 0 ])
+      multmatrix([[1, -frontcurve_side_skew, 0, 0],
+                 [0,  1,   0, 0],
+                 [0,  0,   1, 0],
+                 [0,  0,   0, 1]])
+      translate([ 0, first_front[0] , 0 ])
+      mirror([1,0,0]){
+      rotate([0,-90,0])rotate([0,0,-90]){
+       linear_extrude(height= 200)
+         Machine_FrontProfile();
+      }
+    }
+    translate([ rearcurve_strt_len,
+               0,
+               rearcurve_z_slop ]){
+      translate([ 1,
+                 0,
+                 0
+                 ]){
+       rotate([0,-90,0])rotate([0,0,-90]){
+         linear_extrude(height= rearcurve_strt_len + 1)
+         Machine_RearProfile();
+       }
+      }
+      translate([ 0,
+                 0,
+                 rearcurve_double_inrad ]) {
+       intersection(){
+         rotate([90,0,0]){
+           rotate_extrude(convexity=10, $fn=32) {
+             rotate([0,0,90]) translate([ 0,
+                         -rearcurve_double_inrad ]) {
+               Machine_RearProfile();
+             }
+           }
+         }
+         mirror([0,0,1])
+           translate([0,-75,0]) cube([150,150,150]);
+       }
+      }
+    }
+  }
+}
+
+module Machine(){ ////toplevel
+  Machine_Arm();
+  Machine_Curves();
+}
+  
+function Rectangle_corners(c0, sz) =
+  // returns the corners of a rectangle from c0 to c0+sz
+  // if sz is positive, the corners are anticlockwise starting with c0
+  [ c0 + [ 0,     0     ],
+    c0 + [ sz[0], 0     ],
+    c0 + [ sz[0], sz[1] ],
+    c0 + [ 0,     sz[1] ] ];
+
+function Rectangle_corners2posts(c) =
+  [ c[0] + thehd_tr,
+    c[1] + thehd_tl,
+    c[2] + thehd_bl,
+    c[3] + thehd_br ];
+
+module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
+
+function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
+
+m4_dnl   R_EDGE(c,ix)
+m4_dnl        c is from Rectangle_corners and
+m4_dnl        ix is a corner number
+m4_dnl    expands to two comma-separated corners:
+m4_dnl    that denoted by ix, and the next one anticlockwise
+m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]')
+
+module Tile02(){ ////toplevel
+  sz = [100,170];
+  c0 = tile02_tr + -sz;
+  c = Rectangle_corners(c0, sz);
+  posts = Rectangle_corners2posts(c);
+  rcs = [R_EDGE(c,0)];
+  difference(){
+    union(){
+      Rectangle_TileBase(c);
+      Posts(posts);
+      RoundEdge(R_EDGE(c,0));
+      RoundEdge(R_EDGE(c,3));
+      InterlockEdge(R_EDGE(c,2), 0);
+    }
+    InterlockEdge(R_EDGE(c,1), 1);
+    RoundCornerCut(rcs);
+  }
+  RoundCornerAdd(rcs);
+}
+
+module Tile12(){ ////toplevel
+  sz = [100,250];
+  c0 = tile02_tr + [-sz[0], 0];
+  c = Rectangle_corners(c0, sz);
+  posts = Rectangle_corners2posts(c);
+  rcs = [R_EDGE(c,3)];
+  difference(){
+    union(){
+      Rectangle_TileBase(c);
+      Posts(posts);
+      RoundEdge(R_EDGE(c,2));
+      RoundEdge(R_EDGE(c,3));
+    }
+    InterlockEdge(R_EDGE(c,0), 1);
+    InterlockEdge(R_EDGE(c,1), 1);
+    RoundCornerCut(rcs);
+  }
+  RoundCornerAdd(rcs);
+}
+
+tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
+tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
+tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
+
+module Tile11(){ ////toplevel
+  sz = [250,250];
+  c0 = tile01_tr + [-sz[0],0];
+  c = Rectangle_corners(c0, sz);
+  cnr_posts = Rectangle_corners2posts(c);
+  posts = concat(
+                Posts_interpolate_one(cnr_posts[0],
+                                      cnr_posts[1] - [cutout_tile11_x, 0]),
+                [ cnr_posts[1] + [0, cutout_tile11_y],
+                  cnr_posts[2],
+                  cnr_posts[3]
+                  ]);
+  difference(){
+    union(){
+      Rectangle_TileBase(c);
+      Posts(posts);
+      RoundEdge(R_EDGE(c,2));
+      InterlockEdge(R_EDGE(c,3));
+    }
+    InterlockEdge(c[0], tile_01_11_cnr, 1);
+    InterlockEdge(tile_11_10_cnr, c[2], 1);
+    Machine();
+  }
+}    
+
+module Tile01(){ ////toplevel
+  sz = [250,170];
+  c0 = tile01_tr + -sz;
+  c = Rectangle_corners(c0, sz);
+  cnr_posts = Rectangle_corners2posts(c);
+  posts = concat(
+                Posts_interpolate_one(R_EDGE(cnr_posts,0)),
+                [ cnr_posts[2] + [0, -cutout_tile01_y] ],
+                Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
+                                      cnr_posts[3])
+                );
+  difference(){
+    union(){
+      Rectangle_TileBase(c);
+      Posts(posts);
+      RoundEdge(R_EDGE(c,0));
+      InterlockEdge(tile_01_11_cnr, c[3]);
+      InterlockEdge(R_EDGE(c,3));
+    }
+    InterlockEdge(c[1], tile_01_00_cnr, 1);
+    Machine();
+  }
+}    
+
+module Tile10(){ ////toplevel
+  sz = [250,250];
+  c0 = tile01_tr + [0,0];
+  c = Rectangle_corners(c0, sz);
+  cnr_posts = Rectangle_corners2posts(c);
+  cty = cutout_tile11_y;
+  rcy = cty + rearcurve_avoid_y;
+  posts = [ cnr_posts[0] + [ 0,                             cty ],
+           cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
+           cnr_posts[1] + [ 0,                             rcy ],
+           cnr_posts[2],
+           cnr_posts[3] ];
+  rcs = [R_EDGE(c,2)];
+  difference(){
+    union(){
+      Rectangle_TileBase(c);
+      Posts(posts);
+      RoundEdge(R_EDGE(c,1));
+      RoundEdge(R_EDGE(c,2));
+      InterlockEdge(c[3], tile_11_10_cnr);
+    }
+    RoundCornerCut(rcs);
+    Machine();
+  }
+  RoundCornerAdd(rcs);
+}
+
+module Tile00(){ ////toplevel
+  sz = [250,170];
+  c0 = tile01_tr + [0,-sz[1]];
+  c = Rectangle_corners(c0, sz);
+  cnr_posts = Rectangle_corners2posts(c);
+  cty = cutout_tile01_y;
+  rcy = cty + frontcurve_avoid_y;
+  posts = [ cnr_posts[0],
+           cnr_posts[1],
+           cnr_posts[2] + [ 0,                             -rcy ],
+           cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
+           cnr_posts[3] + [ 0,                             -cty ]
+           ];
+  rcs = [R_EDGE(c,1)];
+  difference(){
+    union(){
+      Rectangle_TileBase(c);
+      Posts(posts);
+      RoundEdge(R_EDGE(c,0));
+      RoundEdge(R_EDGE(c,1));
+      InterlockEdge(tile_01_00_cnr, c[0]);
+    }
+    RoundCornerCut(rcs);
+    Machine();
+  }
+  RoundCornerAdd(rcs);
+}
+
+module Demo(){ ////toplevel
+  translate(demo_slop*[-2,1]) color("blue") Tile12();
+  translate(demo_slop*[-2,0]) color("red")  Tile02();
+  translate(demo_slop*[-2,1]) color("orange") Tile11();
+  translate(demo_slop*[-2,0]) color("purple") Tile01();
+  translate(demo_slop*[-3,1]) color("blue")   Tile10();
+  translate(demo_slop*[-3,0]) color("red")    Tile00();
+  %Machine();
+}
   
 //TestPiece1();
 //TestPiece2();
 //Demo();
+
+//Machine_Profile();
+//Machine_RearProfile();