From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 5 Aug 2014 16:04:17 +0000 (+0100)
Subject: osstest-arm-psu-bracket: wip
X-Git-Tag: filamentspool-v2-release~319
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=2d190f630a108cc95fe224452e763837976457c3

osstest-arm-psu-bracket: wip
---

diff --git a/osstest-arm-hub-bracket.scad b/osstest-arm-hub-bracket.scad
new file mode 100644
index 0000000..6b21eb3
--- /dev/null
+++ b/osstest-arm-hub-bracket.scad
@@ -0,0 +1,36 @@
+// -*- C -*-
+
+len = 80;
+basethick = 4;
+sidewall = 5;
+width = 40;
+
+strapthick = 4;
+strapwidth = 5;
+
+strapbotgap = 1;
+strapsidegap = 4;
+overstrap = 4;
+
+wallheight = strapbotgap + strapthick + overstrap;
+
+availlen = (len - strapsidegap);
+numstraps = floor(availlen / (strapwidth + strapsidegap));
+strapstride = availlen / numstraps;
+echo(numstraps, strapstride);
+
+module Bracket(){
+  difference(){
+    cube([len, width, basethick+wallheight]);
+    translate([-1, sidewall, basethick])
+      cube([len+2, width-sidewall*2, wallheight+1]);
+    for (i=[0:numstraps-1]) {
+      translate([ (0.5+i)*strapstride + strapsidegap/2,
+		  width/2,
+		  basethick + strapbotgap + strapthick/2 ])
+	cube([strapwidth, width*2, strapthick], center=true);
+    }
+  }
+}
+
+Bracket();