From 8a71929535e841eb3a51160a099040a2e0411b3d Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 17 Jun 2017 23:41:54 +0100
Subject: [PATCH] ring-tests: ready for a go

---
 ring-tests.scad | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/ring-tests.scad b/ring-tests.scad
index 3c784b7..c3bd34f 100644
--- a/ring-tests.scad
+++ b/ring-tests.scad
@@ -3,6 +3,8 @@
 thick = 3.5;
 width = 5;
 
+centre_dia = 21;
+
 // calculated
 
 ellipse_width = width / 0.90;
@@ -14,4 +16,28 @@ module Profile(){
   }
 }
 
-Profile();
+module Ring(dia){
+  rotate_extrude($fn=100){
+    translate([dia/2 + thick/2, 0]){
+      Profile();
+    }
+  }
+}
+
+//Profile();
+//Ring(centre_dia);
+
+module Tests(){
+  min_dia = 19;
+  max_dia = 22;
+  dia_step = .25;
+  n_dias = (max_dia - min_dia)/dia_step;
+  for (i= [ 0 : n_dias ]) {
+    echo(i);
+    rotate([0,0, i*360 / (n_dias+2)])
+      translate([80,0,0])
+      Ring(min_dia + (max_dia-min_dia)*(i/n_dias));
+  }
+}
+
+Tests();
-- 
2.30.2