From 709b37e85527845b1306f6ec2b10021a735b57bf Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 1 Aug 2015 23:23:06 +0100
Subject: [PATCH] pull-cord-keeper: wip

---
 pull-cord-keeper.scad | 33 ++++++++++++++++++++++++++++-----
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/pull-cord-keeper.scad b/pull-cord-keeper.scad
index 1e367b6..ddbcaf6 100644
--- a/pull-cord-keeper.scad
+++ b/pull-cord-keeper.scad
@@ -17,6 +17,9 @@ feedxgap = 5;
 
 feedzgap = 5;
 
+ribdepth = 2;
+ribheight = 3;
+
 module Oval(centredist, rad) {
   hull() {
     translate([-centredist/2,0,0]) circle(r=rad);
@@ -51,8 +54,28 @@ module Division(biggerpi) {
     cube([100, 100, 10]);
 }
 
-//difference(){
-%  Positive();
-//  Division(0);
-//}
-Division(1);
+module Ribs(){
+  imax = ceil(height*2 / ribheight);
+  for (i=[-imax:imax]) {
+    hull(){
+      translate([-ribdepth/2,
+		 ribheight*i,
+		 0])
+	polygon([[0,          0],
+		 [ribdepth, -ribheight],
+		 [ribdepth, +ribheight]]);
+      translate([50, 0])
+	square([1, height*2], center=true);
+    }
+  }
+}	    
+
+module Demo(){
+  //difference(){
+  %  Positive();
+  //  Division(0);
+  //}
+  Division(1);
+}
+
+Ribs();
-- 
2.30.2