earring-stand: back pillars

[reprap-play.git] / earring-stand.scad

diff --git a/earring-stand.scad b/earring-stand.scad
index 437c038defcfe607a08d1698fae5c6de310babde..1155710ae5464865e05c2a5022790c94b220646d 100644 (file)
--- a/earring-stand.scad
+++ b/earring-stand.scad
@@ -5,6 +5,12 @@ include <commitid.scad>
 front_height = 80;
 front_width = 120;
 front_setback = 30;
+front_thick = 2;
+
+back_thick = 2;
+back_pillarw = 6;
+
+base_thick = 2;
 
 eclip_inner_rad = 2.5;
 eclip_gap_rad = 0.1;
@@ -46,6 +52,8 @@ eclip_wall_offset = -ppxl;
 
 eclip_ra_offset = r2 - 0.1;
 
+eclip_recept_height = r2;
+
 eclip_rhs_offset = ppxl + rgap + eclip_prong_th;
 // does not include main_th
 
@@ -152,7 +160,8 @@ ur = [ -uf[1], uf[0]];
 
 pp = [0, 0];
 pq = pp + uf*front_height + ur*eclip_ra_offset;
-pr = [ pq[0] - eclip_base_offset + eclip_wall_offset, 0 ];
+pr = [ pq[0] - eclip_base_offset - eclip_wall_offset,
+       0 ];
 
 echo("uf ur P Q R", uf, ur, pp, pq, pr);
 
@@ -160,7 +169,7 @@ module Sketch(){
   polygon([pq, pp, pr]);
 }
 
-thicks = [ 2, 2, 2 ];
+thicks = [ base_thick, front_thick, back_thick ];
 
 module Joins(alpha, objnum, objnum_f, objnum_m) {
   pitch = (front_width - eclip_each_len) / (num_eclips-1);
@@ -223,17 +232,39 @@ module Base(){
 }
 
 module Front(){
-  %ObjectJoins(1);
+  ObjectJoins(1);
   rotate([0, 90-beta, 0])
     translate([0, 0, ppxl])
-    rotate([0,0,90])
+    rotate([0,0,90]) {
     cube([front_width,
-         front_height - (-ppxl) + thicks[1],
+         front_height - eclip_wall_offset + thicks[1],
          thicks[1]]);
+  }
 }
 
 module Back(){
   ObjectJoins(2);
+
+  zmin = pr[1];
+  zmax = pq[1] + eclip_prong_th;
+  height = zmax - zmin;
+
+  translate([pr[0] + eclip_wall_offset - thicks[2],
+            0, 0])
+    rotate([0,90,0])
+    rotate([0,0,90]) {
+    difference(){
+      cube([front_width,
+           height,
+           thicks[2]]);
+      translate([back_pillarw,
+                eclip_recept_height,
+                -10])
+       cube([front_width - back_pillarw*2,
+             height - eclip_recept_height*2 - eclip_prong_th,
+             20]);
+    }
+  }
 }
 
 module Demo(){