add angle bracket mounting system

rack-mount/angle-bracket/README.md

@@ -0,0 +1,7 @@
+
+# Angle Bracket System
+
+
+![demo](./animate.gif)
+
+Please see [entry.scad](./entry.scad) for config and building. Make sure the correct rack profile is configured in [rackFrame.scad](../../config/rackFrame.scad).

rack-mount/angle-bracket/animate.scad

@@ -0,0 +1,24 @@
+use <./entry.scad>
+
+$vpt = [120,-30,63];
+$vpr = [74,0,25];
+$vpd = 550;
+$vpf = 22.50;
+
+animateAngleBrackets(at=$t);
+
+
+module animateAngleBrackets(at=$t) {
+
+    x = 150;
+    y = 70;
+    dx = abs(lerp(a=-20, b=20, t=at));    
+    dy = abs(lerp(a=-50, b=50, t=at));
+
+    u = abs(at - 0.5) > 0.25 ? 3 : 4;
+
+    angleBrackets(visualize=true, boxWidth=x+dx, boxDepth=y+dy, u=u);
+
+}
+
+

rack-mount/angle-bracket/entry.scad

@@ -0,0 +1,36 @@
+include <../common.scad>
+
+use <../enclosed-box/sideRail.scad>
+
+
+/*
+  Simple angle bracket mounting system. Mainly derived the enclosed box system. 
+*/
+module angleBrackets (
+    // begin config ////////////////////////////////////////////////////////////////////////////////////////////////////////
+    
+    // Does not affect any part dimensions. Set this to true to visualize how a box would be mounted.
+    visualize = false,
+
+
+    thickness = 3,
+    boxWidth = 160,
+    boxDepth = 120,
+    sideVent = false,
+    u = 3
+
+    // end config //////////////////////////////////////////////////////////////////////////////////////////////////////////
+) {    
+
+    sideSupportRailBase(top=false, defaultThickness=thickness, railSideThickness=thickness, supportedZ=10*u-2*thickness, supportedY=boxDepth, supportedX=boxWidth, sideVent=sideVent);
+
+    rightRailTrans = visualize
+        ? translate(v=[boxWidth,0,0]) * mirror(v=[1,0,0])
+        : translate(v=[30,0,0]) * mirror(v=[1,0,0]);
+        
+    multmatrix(rightRailTrans)
+    sideSupportRailBase(top=false, defaultThickness=thickness, railSideThickness=thickness, supportedZ=10*u-2*thickness, supportedY=boxDepth, supportedX=boxWidth, sideVent=sideVent);
+}
+
+
+angleBrackets();

rack-mount/enclosed-box/README.md

@@ -9,4 +9,4 @@ Please see [entry.scad](./entry.scad) for config and building. Make sure the cor
 - This system comprises three parts: two side rails, and a front plate.
 - This system is useful for mounting heavier box-shaped things. It works by first sliding in the box inside the side rails (which secures `x`, `z`, and one half of the `y` axis), and then mounting the front plate along the main rails (fully securing the `y` axis).
 - Side rails will most likely require supports to print.
-- For wider boxes (nearing the `maxUnitWidth` of the rack), you will have to set `recessSideRail` to true. This is so the side rails do not collide with the main rack rails. 
+- For wider boxes (nearing the `maxUnitWidth` of the rack), you will have to set `recessSideRail` to true. This is so the side rails do not collide with the main rack rails. 

rack-mount/enclosed-box/entry.scad

@@ -21,7 +21,7 @@ visualize = false,
 zOrientation = "middle", // ["middle" | "bottom"]
 recessSideRail = false,
 
-boxWidth = 200,
+boxWidth = 160,
 boxHeight = 27,
 boxDepth = 120,
 

rack-mount/enclosed-box/sideRail.scad

@@ -1,10 +1,10 @@
 include <../common.scad>
 include <./helper.scad>
 
-//sideSupportRailBase(top=true, defaultThickness=1.5, supportedZ=27.2, supportedY=101.5, supportedX=159);
+// sideSupportRailBase(top=true, defaultThickness=1.5, supportedZ=27.2, supportedY=101.5, supportedX=159);
 
 
-module sideSupportRailBase(top=true, recess=false, supportedZ, supportedY, supportedX, zOrientation="middle", defaultThickness=2, railSideThickness=4) {
+module sideSupportRailBase(top=true, recess=false, supportedZ, supportedY, supportedX, zOrientation="middle", defaultThickness=2, railSideThickness=4, sideVent=true) {
 
   mountBlockDepth = 10;
   screwMountGlobalDz = screwDiff / 2.0; // vertical distance between local origin and main rail screw mount
@@ -99,7 +99,7 @@ module sideSupportRailBase(top=true, recess=false, supportedZ, supportedY, suppo
           cube(size = [sideRailBaseWidth, railLength, railBaseThickness]);
         }
       }
-
+      if (sideVent) {
       union() {
         distanceFromSeparator = 3;
         r = 4;
@@ -136,6 +136,7 @@ module sideSupportRailBase(top=true, recess=false, supportedZ, supportedY, suppo
         }
 
       }
+      }
     }
   }