update

cases/common.scad

@@ -0,0 +1,9 @@
+
+/* Some initial configurations and commonly used variables
+   plus functions
+*/
+
+$fn=64;
+
+
+eps=0.01;

cases/rack/base1.scad

@@ -0,0 +1,86 @@
+
+$fn=64;
+
+eps=0.1;
+
+slack = 0.5;
+m3Diameter = 3.0;
+m3Radius = m3Diameter/2.0;
+m3ptr = m3Radius + slack;
+
+module baseFrame() {
+  difference() {
+    cube(size=[200,200,4], center=true);
+    cube(size=[180,180,4], center=true);
+  }
+
+  translate(v=[90,90,0])
+  cube(size=[20,20, 4],center=true);
+
+  translate(v=[-90,90,0])
+  cube(size=[20,20, 4],center=true);
+
+  translate(v=[90,-90,0])
+  cube(size=[20,20, 4],center=true);
+
+  translate(v=[-90,-90,0])
+  cube(size=[20,20, 4],center=true);
+}
+
+module lugBottom() {
+  difference() {
+    cube(size=[9.7,9.7,6], center=true);
+
+    translate(v=[1,1,0])
+    cube(size=[9.1,9.1,5+1], center=true);
+  }
+  
+}
+
+
+module base() {
+
+  difference() {
+    union() {
+      translate(v=[0,0,4/2])
+        baseFrame();
+
+
+      translate(v=[-90,-90,-6/2])
+        lugBottom();
+
+      mirror(v=[1,0,0])
+        translate(v=[-90,-90,-6/2])
+        lugBottom();
+
+      mirror(v=[0,1,0])
+        translate(v=[-90,-90,-6/2])
+        lugBottom();
+
+      mirror(v=[1,1,0])
+        translate(v=[-90,-90,-6/2])
+        lugBottom();
+    }
+
+    union() {
+      translate(v=[90,90,0]) 
+      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+
+      translate(v=[-90,90,0]) 
+      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+
+      translate(v=[90,-90,0]) 
+      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+
+      translate(v=[-90,-90,0]) 
+      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+      
+    }
+  }
+}
+
+base();
+
+*lugBottom();
+
+

cases/rack/l1.scad

@@ -0,0 +1,37 @@
+
+slack = 0.5;
+m3Diameter = 3.0;
+m3Radius = m3Diameter/2.0;
+m3ptr = m3Radius + slack;
+
+legLength = 200;
+
+
+module baseLeg(legLength) {
+  cube(size=[3, 15, legLength]);
+}
+
+
+module leg() {
+  difference() {
+    baseLeg(legLength);
+
+    union() {
+      for (i = [0:18]) {
+        translate(v=[0,10,(i+1)*10])
+          rotate(a=[0,90,0])
+          cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+      }
+
+      translate(v=[0,10,(0+1)*10])
+          rotate(a=[0,90,0])
+          *cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+
+      translate(v=[0,10,(18+1)*10])
+          rotate(a=[0,90,0])
+          *cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+    }
+  }
+}
+
+leg();

cases/rack/legToleranceTest.scad

@@ -0,0 +1,45 @@
+
+slack = 0.5;
+m3Diameter = 3.0;
+m3Radius = m3Diameter/2.0;
+m3ptr = m3Radius + slack;
+
+legLength = 60;
+
+
+module baseLeg(legLength) {
+  difference() {
+    cube(size=[16,16, legLength]);
+
+    translate(v=[4,4,4])
+    cube(size=[16, 16, legLength-2*4]);
+  }
+}
+
+
+module leg(ui) {
+  assert(ui > 0);
+
+  legLength = 20 + (ui-1)*10;
+  
+  difference() {
+    baseLeg(legLength);
+
+    union() {
+      for (i = [0:ui-1]) {
+        translate(v=[0,10,(i+1)*10])
+          rotate(a=[0,90,0])
+          cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+
+        translate(v=[10,0,(i+1)*10])
+          rotate(a=[90,0,0])
+          cylinder(h = 100, r = m3ptr, $fn=32, center=true);
+      }
+
+      translate(v=[10,10,legLength/2])
+      cylinder(h = legLength*2, r = m3ptr, $fn=32, center=true);
+    }
+  }
+}
+
+leg(18);

cases/rack/rackCaseForBox.scad

@@ -0,0 +1,168 @@
+
+/* Simple configurable rack mount component to hold a box-like shell */
+
+include <../common.scad>
+include <./screws.scad>
+
+slack = 0.4;
+
+boxWidth = 157.67;
+boxHeight = 27.0;
+boxLength = 101.5;
+
+
+topThickness = 1.0;
+bottomThickness = 1.0;
+
+sideThickness = 2.0;
+sideSupportWidth = 10;
+
+railWidth = 16.0;
+
+totalHeight = boxHeight+topThickness+bottomThickness;
+totalLength = boxLength+2*sideThickness;
+
+
+railMountWidthDiff = (200.0 - (boxWidth + 2*sideThickness)) / 2.0;
+  
+module sideHolder() {
+
+
+  module frontLowerCaseSegment() {
+    translate(v=[0,0,0])
+      cube(size=[sideSupportWidth, sideThickness, bottomThickness]);
+  }
+
+  module frontUpperCaseSegment() {
+    // no room for slack? :(
+    translate(v=[0,0,boxHeight+bottomThickness])
+      cube(size=[sideSupportWidth, sideThickness, topThickness]);
+  }
+
+  module backLowerCaseSegment() {
+      translate(v=[0,boxLength+slack+sideThickness,0])
+        frontLowerCaseSegment();
+  }
+
+  module backUpperCaseSegment() {
+      translate(v=[0,boxLength+slack+sideThickness,0])
+        frontUpperCaseSegment();
+  }
+
+  module backLowerRailSegment() {
+    translate(v=[0,200.0-sideThickness,0])
+      cube(size=[sideSupportWidth, sideThickness, bottomThickness]);
+  }
+
+  module backUpperRailSegment() {
+    translate(v=[0,200.0-sideThickness,boxHeight+bottomThickness])
+      cube(size=[sideSupportWidth, sideThickness, topThickness]);
+  }
+
+  module frontRailMountSegment() {
+    // +2 is slack
+    translate(v=[-railMountWidthDiff+2,0,0])
+      // should technically use different totalHeight, as current totalHeight is for case holder
+      cube(size=[railWidth,sideThickness,totalHeight]);
+  }
+
+  module backRailMountSegment() {
+    translate(v=[0,200.0-sideThickness,0])
+      // should technically use different totalHeight, as current totalHeight is for case holder
+      frontRailMountSegment();
+  }
+
+
+  module frontFace() {
+    difference() {
+      hull() {
+        frontLowerCaseSegment();
+        frontUpperCaseSegment();
+        frontRailMountSegment();
+      }
+
+      // screw holes
+      translate(v=[-railMountWidthDiff + 10,0,5])
+        rotate(a=[90,0,0])
+        cylinder(r=m3RadiusSlacked, h=10, center=true);
+
+      translate(v=[-railMountWidthDiff + 10,0,25])
+        rotate(a=[90,0,0])
+        cylinder(r=m3RadiusSlacked, h=10, center=true);
+    }
+    
+  }
+
+  module backFace() {
+    translate(v=[0,200.0-sideThickness,0])
+      frontFace();
+      
+  }
+
+  frontFace();
+  backFace();
+
+  
+
+  hull() {
+    frontLowerCaseSegment();
+    backLowerCaseSegment();
+  }
+
+  hull() {
+    backLowerCaseSegment();
+    backUpperCaseSegment();
+  }
+
+  hull() {
+    frontUpperCaseSegment();
+    backUpperCaseSegment();
+  }
+
+
+  hull() {
+    backLowerRailSegment();
+    backLowerCaseSegment();
+  }
+
+  hull() {
+    backUpperRailSegment();
+    backUpperCaseSegment();
+  }
+
+  // side support/hold for case
+  difference() {
+    cube(size=[sideThickness, totalLength, totalHeight]);
+
+    translate(v=[-eps/2,5,5])
+      cube(size=[sideThickness+eps,totalLength-10+eps, totalHeight-10+eps]);
+  }
+
+
+  // side support/hold for case
+  difference() {
+    translate(v=[sideSupportWidth-sideThickness,totalLength,0])
+    cube(size=[sideThickness, 200.0-totalLength, totalHeight]);
+
+    translate(v=[sideSupportWidth-sideThickness-eps/2,(200-totalLength)+15,5])
+      cube(size=[sideThickness+eps,(200.0-totalLength)-10+eps, totalHeight-10+eps]);
+  }
+}
+
+
+module sideHolderAligned() {
+  translate(v=[19,0,0])
+    sideHolder();
+}
+
+module mSide() {
+  mirror(v=[1,0,0]) {
+    sideHolderAligned();
+  }
+}
+
+sideHolderAligned();
+
+translate(v=[42 + boxWidth,0,0])
+*mSide();
+

cases/rack/screws.scad

@@ -0,0 +1,13 @@
+
+/* Some common screw dimensions */
+holeRadiusSlack = 0.5;
+
+
+m3Diameter = 3.0;
+m3Radius = m3Diameter/2.0;
+
+m3RadiusSlacked = m3Radius + holeRadiusSlack;
+
+
+
+m3ptr = m3RadiusSlacked;