X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=nook-case.scad;h=ecbbbc22fd95bb31a86b9d391392bd3ef472142d;hb=6dba99d4594590c1af949fbd0379d366a05c2ca6;hp=62f954c555898a58f7b29f2c74d3215c605f787c;hpb=e39d790116ffb7a984c219927cf33c7258d98627;p=reprap-play.git

diff --git a/nook-case.scad b/nook-case.scad
index 62f954c..ecbbbc2 100644
--- a/nook-case.scad
+++ b/nook-case.scad
@@ -1,13 +1,16 @@
 // -*- C -*-
 
+// Infill density: 20%
+
+include <funcs.scad>
 include <utils.scad>
 
-nook_th = 12.41 + 0.50 - 1.50;
-nook_w = 127.12 + 0.75 - .95;
-nook_h = 123.44 + 21.88 + 21.05 + 0.75 - 1.90;
+nook_th = 12.41 + 0.50 - 1.50 + 1.35 - .25;
+nook_w = 127.12 + 0.75 - .95 - .50;
+nook_h = 123.44 + 21.88 + 21.05 + 0.75 - 1.90 - 0.50 - 0.50;
 
 edge_ledge_w = 9.60;
-edge_ledge_h = 2.44;
+edge_ledge_h = 2.44 - .25;
 edge_ledge_inc_ang = 10; // degrees
 
 usb_w = 14.5;
@@ -16,6 +19,9 @@ usb_below = 1.5;
 open_recess_w = 12.5;
 open_recess_h = 2.5;
 
+open_recess_2_len = 15;
+open_recess_2_d_tooth = 30;
+
 nook_cnr_rad = 10;
 
 case_th = 2.5;
@@ -33,10 +39,11 @@ engage_l0 = 10;
 engage_l1 = 10;
 engage_l2 = 3;
 
-tooth_inward = gap[0] * 1.0;
-tooth_x = nook_w * 1/6;
+tooth_inward = gap[0] * 1.0 + 0.25 + 0.25;
 tooth_w = 15;
 
+diag_near_hinge_slope = 0.5;
+
 $test = false;
 
 $fa = $test ? 10 : 3;
@@ -80,6 +87,8 @@ spp30 = [ spp8[0], spp31[1] ];
 
 nom_cnr = 0.5 * [nook_w, nook_h, 0] - nook_cnr_rad * [1,1,0];
 
+tooth_y = nom_cnr[1] - tooth_w/2;
+
 etxa = nom_cnr[0] - engage_l2;
 etxb = etxa - engage_l1;
 etxc = -(nom_cnr[0] - engage_l2);
@@ -90,6 +99,9 @@ tapb = tapa - tape_w;
 opra = nom_cnr[1] - engage_l2;
 oprb = opra - open_recess_w;
 
+opqa = tooth_y - open_recess_2_d_tooth + open_recess_2_len/2;
+opqb = opqa - open_recess_2_len;
+
 tppS = tppB + [-gap[0], 0];
 tppP = [ tppS[0] - tooth_th, tppC[1] ];
 tppQ = tppP + tooth_height * [0,-1] + tooth_inward * [1,0];
@@ -239,6 +251,22 @@ module FaceCore(z0,z1, extra_left, extra_right){
   }
 }
 
+module DiagonaliseNearHinge(wider){
+  sz = spp0[1] - spp30[1] + gap[1];
+
+  for (my=[0,1]) mirror([0,my,0]) {
+      translate([-etxa, -nook_h/2, 0])
+	mirror([1,0,0])
+	linextr_y_xz(spp31[0] - wider, spp30[0] + gap[0] + 0.1)
+	translate([ 0, spp30[1] ])
+	polygon([[  -1, 0 ],
+		 [   0, 0 ],
+		 [  sz/diag_near_hinge_slope, sz ],
+		 [  sz/diag_near_hinge_slope, sz + 0.1 ],
+		 [  -1, sz + 0.1 ]]);
+    }
+}    
+
 module Base(){ ////toplevel
   difference(){
     FaceCore(spp7[1],spp8[1], 0.3, 0) {
@@ -250,6 +278,8 @@ module Base(){ ////toplevel
       mirror([0,1,0])
       linextr_x_yz(-usb_w/2, usb_w/2)
       rectfromto(spp8 + [-40, usb_below], [40, 40]);
+    translate([ gap[0], 0,0 ])
+      DiagonaliseNearHinge(10);
 /*
     translate([nook_w/2, 0, 0])
       linextr_y_xz(oprb, opra)
@@ -257,17 +287,33 @@ module Base(){ ////toplevel
       rectfromto([-40, -open_recess_h], [40, 1]);
 */
   }
+  if ($test) {
+    linextr(spp7[1], spp8[1]) {
+      hull(){
+	for (r=[0,180])
+	  rotate([0,0,r])
+	    translate(nom_cnr + -1 * nook_cnr_rad*[1,1])
+	    square(12);
+      }
+    }
+  }
 }
 
 module Top(){ ////toplevel
-  FaceCore(tppE[1],tppD[1], -gap[0], gap[0] + 0.3) {
-    LeftTopMainProfile();
-    RightTopMainProfile();
-    TopTapeCutout();
+  difference(){
+    FaceCore(tppE[1],tppD[1], -gap[0], gap[0] + 0.3) {
+      LeftTopMainProfile();
+      RightTopMainProfile();
+      TopTapeCutout();
+    }
+    translate([nook_w/2, 0,0])
+      linextr_y_xz(opqb, opqa)
+      rectfromto(spp8, tppC + [-1,1]);
   }
-  translate([tooth_x, nook_h/2, 0])
-    linextr_x_yz(-tooth_w/2, +tooth_w/2)
-    mirror([1,0])
+  translate([0,0, gap[1]])
+    DiagonaliseNearHinge(0);
+  translate([nook_w/2, tooth_y, 0])
+    linextr_y_xz(-tooth_w/2, +tooth_w/2)
     ToothProfile();
 }
 module TopPrint(){ ////toplevel