From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 10 Oct 2012 20:23:43 +0000 (+0100)
Subject: Merge branch 'master' of chiark:/u/ianmdlvl/reprap/play
X-Git-Tag: filamentspool-v2-release~752
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=53a30809514a5f7530f2b8d4158da21cec2e6657;hp=2306d7a8081ca9b04c2101be7023a24c70014a9f;p=reprap-play.git

Merge branch 'master' of chiark:/u/ianmdlvl/reprap/play
---

diff --git a/doveclip.scad b/doveclip.scad
index 06db088..a7dc6bd 100644
--- a/doveclip.scad
+++ b/doveclip.scad
@@ -77,7 +77,8 @@ function DoveClipPairSane_width(count=2) =
   2 * (nomrad + jawthick + ((nomrad*2 + jawthick) * (count-1)/2));
 
 module ExtenderPillars(length, width, height,
-		       pillarw=3.5, pillarslope=0.75, webthick=1) {
+		       pillarw=3.5, pillarslope=0.75, webthick=1,
+		       baseweb=false, basewebthick=1) {
   pillarr=pillarw/2;
   pilesw = width - pillarw;
   d = 0.25;
@@ -106,6 +107,10 @@ module ExtenderPillars(length, width, height,
 	  }
 	}
     }
+  if (baseweb) {
+    translate([0, -pilesw/2, 0])
+      cube([length, pilesw, basewebthick]);
+  }
 }
 
 module DoveClipExtender(length, ha=7, hb=7, counta=2, countb=2,
diff --git a/filamenttrestle.scad b/filamenttrestle.scad
new file mode 100644
index 0000000..57f52ad
--- /dev/null
+++ b/filamenttrestle.scad
@@ -0,0 +1,101 @@
+// -*- C -*-
+
+spoolwidth = 80; // fixme needs to be measured
+trestleheight = 80; // fixme needs to be checked
+trestlebase = 80; // fixme needs to be checked
+
+include <doveclip.scad>
+
+spoolwidthgap = 2;
+barrady = 5;
+barradz = 7;
+guidewidth = 3;
+guiderad = 20;
+
+plugl = 12;
+plugwmin = 3;
+plugh = 10;
+plugslope = 0.5;
+plugwmax = plugwmin + plugh * plugslope * 2;
+
+trestlelegw = 10;
+trestlebaseh = 10;
+trestleplugd = 1;
+
+topcylthick = 3;
+topcylbasedepth = 4;
+
+module Plug(d=0){
+  a = -atan(plugslope);
+  tdx = d * cos(a);
+  tdy = d * sin(a);
+  bdx = d / cos(a);
+  translate([-d,0,0]) rotate([90,0,90]) linear_extrude(height=plugl+0.1+d*2){
+    polygon([[-(plugwmin/2 + bdx),  0],
+	     [-(plugwmax/2 + tdx),  plugh + tdy],
+	     [+(plugwmax/2 + tdx),  plugh + tdy],
+	     [+(plugwmin/2 + bdx),  0]]);
+  }
+}
+
+module Bar(){
+  spoolw = spoolwidth + spoolwidthgap*2;
+  barz = barradz * 0.5;
+  biggestw = spoolw + 50;
+
+  intersection(){
+    for (mir=[0,1]) {
+      mirror([mir,0,0]) {
+	translate([0,0,barz]) {
+	  scale([1,barrady,barradz]) translate([-1,0,0])
+	    rotate([0,90,0]) cylinder(r=1, h=spoolw/2+2, $fn=30);
+	  translate([spoolw/2,0,0])
+	    rotate([0,90,0]) cylinder(r=guiderad, h=guidewidth, $fn=60);
+	}
+	translate([spoolw/2 + guidewidth, 0, 0])
+	  Plug();
+      }
+    }
+    translate([-biggestw/2, -50, 0])
+      cube([biggestw, 100, 100]);
+  }
+}
+
+module Trestle(){
+  legang = atan2(trestlebase/2, trestleheight);
+  eplen = sqrt(trestleheight*trestleheight + trestlebase*trestlebase*0.25);
+  topcylw = plugwmax + topcylthick*2;
+
+  difference(){
+    union(){
+      for (mir=[0,1]) {
+	mirror([mir,0,0]) {
+	  rotate([0,0, -90-legang])
+	    ExtenderPillars(length=eplen+trestlelegw,
+			    width=trestlelegw,
+			    height=plugl,
+			    baseweb=true);
+
+	  translate([-trestlebase/2, -trestleheight, 0])
+	    cylinder(r=trestlelegw/2*1.2, h=plugl);
+	}
+      }
+      translate([-topcylw/2, -topcylbasedepth, 0])
+	cube([topcylw, topcylbasedepth + plugh + topcylthick, plugl]);
+
+      translate([-trestlebase/2, -trestleheight, 0])
+	ExtenderPillars(length=trestlebase, width=trestlebaseh*2, height=plugl);
+    }
+    translate([-300, -trestleheight-50, -1])
+      cube([600, 50, plugl+2]);
+
+    rotate([-90,-90,0])
+      Plug(d=trestleplugd);
+  }
+}
+
+//Bar();
+Trestle();
+
+//Plug(d=1);
+//ExtenderPillars(80,12,8, baseweb=true);
diff --git a/trailerhubcap.scad b/trailerhubcap.scad
index 9e96d09..4ae4c7d 100644
--- a/trailerhubcap.scad
+++ b/trailerhubcap.scad
@@ -9,10 +9,10 @@ poleholerad = 6;
 
 mainoverlap = 1.5;
 
-hookbasew = 3.5;
-hookfullw = 6;
+hookbasew = 5.0;
+hookfullw = 7;
 hookheight = 4.5;
-hookwidth = 5;
+hookwidth = 8;
 hookbevelw = 0.75;
 hookbevelh = 1.5;