X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=sewing-table.scad.m4;h=b71e04110cc327b69d281f314d33d066402a0221;hp=3cd3ce252d8eef142a8f8f027497f5917d18a3e6;hb=078e4b780d020687031215285f65dda3e3acccd0;hpb=fb17946203d7db5c13e80c70334f0eec94d74d52

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 3cd3ce2..b71e041 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -14,7 +14,7 @@ post_dia = 8;
 
 post_shorter = 1;
 
-screw_dia = 3.168;
+$screw_dia = 3.2;
 screw_big_dia = 3.6;
 screw_big_len = 4.0;
 
@@ -51,6 +51,12 @@ leg_n_fins = 4;
 leg_n_tubules = 4;
 leg_tubule_dia = 4;
 
+// spacer
+
+spacer_ext_slop = 0.25;
+spacer_int_slop = 0.25;
+spacer_height = 10;
+
 // cutout
 
 machine_rear_to_front = 84 + 0.25 - 1.4;
@@ -151,7 +157,7 @@ module Post(){
 	cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
 	translate([0,0, tile_th]) {
 	  cylinder(r= screw_big_dia/2, h= screw_big_len);
-	  cylinder(r= screw_dia/2, h= ply_th, $fn=20);
+	  cylinder(r= $screw_dia/2, h= ply_th, $fn=20);
 	}
       }
     }
@@ -484,17 +490,31 @@ module TestDemo(){ ////toplevel
 }
 
 module PostTestPiece(){ ////toplevel
-  holes = [ [   0, 0] ];
-  holes_forcnrs = concat(holes, [ [1, 0] ]);
-  corners = TestPiece_holes2corners(holes_forcnrs);
+  hole_sizes = [2.8, 3.0, 3.1, 3.134, 3.168, 3.2, 3.3, 3.5];
+  nholes = len(hole_sizes)*2;
+  nrows = 4;
+  stride = post_dia*1.5;
+  rect_sz = stride * [ nrows,
+		       ceil(nholes/nrows) ];
+  corners = Rectangle_corners(-stride * 0.5 * [1,1], rect_sz);
   difference(){
     union(){
       TileBase(corners[0], corners[2]);
-      Posts(holes);
       RoundEdge(corners[0], corners[1]);
-      InterlockEdge(corners[3], corners[0], 0, nlobes=1);
+      for (i= [ 0: nholes-1 ]) {
+	$screw_dia = hole_sizes[ floor(i/2) ];
+	translate(stride * [ (nrows-1) - (i % nrows),
+			     floor(i / nrows),
+			     0
+			     ]) {
+	  Posts([[0,0]]);
+	  color("blue")
+	    mirror([0,0,1])
+	    translate([post_dia/2, -post_dia/2, 1])
+	    cube([1, post_dia * (i / nholes), tile_th]);
+	}
+      }
     }
-    PostHoles(holes);
   }
 }
 
@@ -688,6 +708,17 @@ module TestStrapPeg_Long(){ ////toplevel
   TestStrapPeg_any(60);
 }
 
+module PostSpacer(){ ////toplevel
+  $fn = 50;
+  difference(){
+    cylinder(r= ply_hole_dia_real/2 - spacer_ext_slop,
+	     h= spacer_height);
+    translate([0,0,-1])
+      cylinder(r= post_dia/2 + spacer_int_slop,
+	       h= ply_th + 2);
+  }
+}
+
 module Machine(){ ////toplevel
   Machine_NewArm();
   Machine_Curves();
@@ -749,6 +780,16 @@ module Leg(){ ////toplevel
 		      + (!TEST ? 0.2 : -leg_midspc_dia/2),
 		   $fn=30);
       }
+    cid_shear = (leg_fin_bot_w - leg_fin_top_w)/2 /
+                 (leg_height -leg_fin_bot_flat_z);
+    multmatrix([[ 1, 0, 0, leg_midspc_dia/2 ],
+		  [ 0, cid_shear,
+		          1, -leg_fin_bot_w/2 ],
+		  [ 0, 1, 0, -leg_height + leg_fin_bot_flat_z ],
+		  [ 0, 0, 0, 1 ]])
+      Commitid_BestCount([ leg_big_dia/2 - leg_midspc_dia/2,
+                            leg_height - leg_fin_bot_flat_z
+	  		      - leg_top_thick ]);
     if (!TEST)
       for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
 	  mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])