From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 17 Oct 2017 22:10:59 +0000 (+0100)
Subject: poster-tube-lid: add StrapHoop module
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=bca8d63d7c2be7ee47998b204655747c45d54d3f

poster-tube-lid: add StrapHoop module
---

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 7937659..433f466 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -52,6 +52,10 @@ jig_hole_dia = 3.0;
 jig_rim = 5;
 jig_mark = 5;
 
+strap_hoop_thick = 6;
+strap_hoop_inside = 10;
+strap_hoop_strlen = 10;
+
 // calculated
 
 bayo_entry_x = bayo_entry;
@@ -163,6 +167,32 @@ module MainProfile(){
   }
 }
 
+module StrapHoopProfile(){
+  circle(r = strap_hoop_thick/2);
+}
+
+module StrapHoop(){ ////toplevel
+  bigrad = strap_hoop_inside + strap_hoop_thick/2;
+  extralen = strap_hoop_thick;
+
+  for (x= [ -1, +1 ] * bigrad) {
+    translate([x, -extralen, 0])
+      rotate([-90,0,0])
+      linear_extrude(height= extralen + strap_hoop_strlen + 0.1,
+		     convexity=10)
+      StrapHoopProfile();
+  }
+  translate([0, strap_hoop_strlen, 0]){
+    intersection(){
+      rotate_extrude(convexity=10)
+	translate([bigrad, 0,0])
+	StrapHoopProfile();
+      translate([0,50,0])
+	cube([100,100,100], center=true);
+    }
+  }
+}
+
 module HandlingProfile(){
 //  translate([
 }