From ca54be2458a9b7f57db5bee9782035e36be38bec Mon Sep 17 00:00:00 2001
From: pacien
Date: Mon, 12 Aug 2019 08:37:22 +0200
Subject: reinforce clamps

---
 .gitignore                       |  1 +
 tabletop_tablet_stand_clamp.scad | 35 ++++++++++++++++++++++-------------
 2 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/.gitignore b/.gitignore
index cdb04a4..7dde8be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.stl
+*.gco
 *.gcode
diff --git a/tabletop_tablet_stand_clamp.scad b/tabletop_tablet_stand_clamp.scad
index 2ade4eb..b74efd4 100644
--- a/tabletop_tablet_stand_clamp.scad
+++ b/tabletop_tablet_stand_clamp.scad
@@ -16,39 +16,48 @@ module prism(l, w, h) {
   );
 }
 
+module reflect(axises) {
+  children();
+  mirror(axises) children();
+}
+
 baseThickness = 3;
-baseHeight = 40;
+baseHeight = 20;
 baseWidth = 80;
 
 gapWidth = 30;
 clampDepth = 15;
 clampHeight = 5;
 
-threadDiameter = 7;
+threadDiameter = 6.5;
 threadTubeOuterDiameter = threadDiameter+baseThickness*2;
 
 difference() {
   union() {
     cube([baseThickness, baseWidth, baseHeight]);
-    
+
     translate([-clampDepth, 0, 0])
-      cube([clampDepth, baseWidth, baseThickness]);
-    
-    translate([-clampDepth, 0, baseThickness])
-      prism(baseWidth, clampDepth, clampHeight);
-    
-    translate([0, (baseWidth - threadTubeOuterDiameter)/2, 0])
-      cube([threadTubeOuterDiameter/2, threadTubeOuterDiameter, baseHeight]);
-    
+      cube([clampDepth, baseWidth, baseThickness+clampHeight]);
+
+    translate([baseThickness, baseWidth/2, 0])
+      reflect([0, 1, 0])
+        rotate([90, 0, 0])
+          prism(baseHeight, threadTubeOuterDiameter-baseThickness, baseWidth/2);
+
     translate([threadTubeOuterDiameter/2, baseWidth/2, 0])
       cylinder(r = threadTubeOuterDiameter/2, h = baseHeight);
   }
-  
+
   // thread hole
   translate([threadTubeOuterDiameter/2, baseWidth/2, 0])
     cylinder(r = threadDiameter/2, h = baseHeight);
-  
+
   // clamp gap
   translate([-clampDepth, (baseWidth-gapWidth)/2, 0])
     cube([clampDepth, gapWidth, clampHeight+baseThickness]);
+
+  // clamp indent
+  translate([-clampDepth/2, 0, clampDepth/2+baseThickness])
+    rotate([-90, 0, 0])
+      cylinder(r = clampDepth/2, h = baseWidth);
 }
-- 
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