From a7f05006a381c0e890fd00484f2f20c443aeff8a Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 13 Feb 2016 23:55:24 +0000
Subject: [PATCH] bike-lipo-box: wip StrapKeepers

Partially reverts 67b79108 - bringing back the basics of the shape
used there
---
 bike-lipo-box.scad | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/bike-lipo-box.scad b/bike-lipo-box.scad
index 72f506b..e5281ce 100644
--- a/bike-lipo-box.scad
+++ b/bike-lipo-box.scad
@@ -25,12 +25,14 @@ wallthick = 2.5;
 
 cabledia = 8.7;
 
-strap_w = 5;
+strap_w = 5 + 1;
 strap_th = 4;
 strap_pillar = 3;
 strap_pillard = 5;
 strap_over = 2;
 
+strap_every = 30;
+
 // calculated
 
 totx_outer = totx_inner + wallthick*2;
@@ -149,6 +151,21 @@ module AtGlands(){
   }
 }
 
+module StrapKeepers(){
+  strap_x_tot = strap_w + strap_pillar*2;
+
+  for (sx=[strap_every : strap_every : totx_inner - strap_every]) {
+    echo("strapkeeper at ",sx);
+    translate([sx - strap_x_tot, 0, 0])
+      difference(){
+      translate([0,0, -0.1])
+	cube([strap_x_tot, strap_pillard, strap_th + strap_over]);
+      translate([strap_pillar, -1, 0])
+	cube([strap_w, strap_pillard+2, strap_th]);
+    }
+  }
+}
+
 module Box(){ ////toplevel
   $sealingbox_sz = sb_box_sz;
 
@@ -156,8 +173,6 @@ module Box(){ ////toplevel
   switch_x = chargingconn_x + pxp6012_rad_outer
     + s1930_y_outer/2 + s1930_around;
 
-  strap_x_tot = strap_w + strap_pillar*2;
-
   difference(){
     union(){
       rotate([90,0,0])
-- 
2.30.2