From ae6368cd74c58fa3eaafb6e022e058e5af59bb87 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 23 Jul 2016 23:46:42 +0100
Subject: [PATCH] earring-stand: base base

---
 earring-stand.scad | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/earring-stand.scad b/earring-stand.scad
index f4479a3..61eebe2 100644
--- a/earring-stand.scad
+++ b/earring-stand.scad
@@ -47,6 +47,9 @@ eclip_wall_offset = -ppxl;
 
 eclip_ra_offset = r2 - 0.1;
 
+eclip_rhs_offset = ppxl + rgap + eclip_prong_th;
+// does not include main_th
+
 $fn=70;
 
 module EclipLPlanCore(alpha){
@@ -199,7 +202,25 @@ module ObjectJoins(objnum){
 }
 
 module Base(){
-  ObjectJoins(0);
+  xmin = pr[0] - eclip_rhs_offset - thicks[2];
+  xmax = pp[0] + eclip_rhs_offset + thicks[1]
+    + eclip_prong_th * (1/cos(beta) - 1)
+    + eclip_base_offset * tan(beta);
+  intersection(){
+    ObjectJoins(0);
+    translate([xmin,
+	       -1,
+	       -50])
+      cube([xmax - xmin,
+	    front_width + 2,
+	    300]);
+  }
+  translate([xmin,
+	     0,
+	     -eclip_base_offset - thicks[0]])
+    cube([xmax - xmin,
+	  front_width,
+	  thicks[0]]);
 }
 
 module Front(){
-- 
2.30.2