update

cases/rack/body/top1.scad

@@ -1,79 +1,97 @@
-include <../common.scad>
-include <./screws.scad>
+include <../../common.scad>
+include <../../math.scad>
+include <../screws.scad>
 
 $fn=64;
 
-module baseFrame() {
-  difference() {
-    cube(size=[200,200,4], center=true);
-    cube(size=[180,180,4], center=true);
-  }
-
-  translate(v=[80,80,0])
-  cube(size=[20,20, 4],center=true);
-
-  translate(v=[-80,80,0])
-  cube(size=[20,20, 4],center=true);
-
-  translate(v=[80,-80,0])
-  cube(size=[20,20, 4],center=true);
-
-  translate(v=[-80,-80,0])
-  cube(size=[20,20, 4],center=true);
-}
-
-module lugBottom() {
-  difference() {
-    cube(size=[9.7,9.7,6], center=true);
-
-    translate(v=[2,2,0])
-    cube(size=[9.1,9.1,5+1], center=true);
-  }
-  
-}
+_height = 8;
+_width = 210;
+_depth = 200;
 
 
-module base() {
+module _bodySilBase(width, depth, height, roundedPartHeight) {
+  hull() {
+    cube(size = [width, depth, height - roundedPartHeight]);
+    minkowski() {
+      translate(v = [roundedPartHeight, 0, height - roundedPartHeight])
+        cube(size = [width-2*roundedPartHeight, depth, eps]);
 
-  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=[80,80,0]) 
-      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
-
-      translate(v=[-80,80,0]) 
-      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
-
-      translate(v=[80,-80,0]) 
-      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
-
-      translate(v=[-80,-80,0]) 
-      cylinder(h = 100, r = m3ptr, $fn=32, center=true);
-      
+      rotate(a = [90, 0, 0])
+        cylinder(r = roundedPartHeight, h = eps);
     }
   }
 }
 
-base();
+module _bodySil(width, depth, height, roundedPartHeight, wallThickness, topThickness) {
+  cornerSquareDim = 30;
+
+  difference() {
+    _bodySilBase(width, depth, height, roundedPartHeight);
+
+    union() {
+      translate(v = [wallThickness, cornerSquareDim, - topThickness])
+        _bodySilBase(width - 2 * wallThickness, depth - 2 * cornerSquareDim, height, roundedPartHeight);
+
+      translate(v=[cornerSquareDim, wallThickness, -topThickness])
+        cube(size=[width-2*cornerSquareDim, depth-2*wallThickness, height]);
+    }
+  }
+}
+
+// Negative and centered on xy. Aligned with z=0 downwards
+module _lugAndMagnet() {
+  slack = 0.3;
+  vSlack = 0.1;
+  // lug
+  translate(v=[0,0,-2.5])
+  cube(size=[10+slack, 10+slack, 5+vSlack], center=true);
+
+  // hole for magnet, no tolerance on
+  translate(v=[0,0,-(5+vSlack+1.7)])
+  cylinder(d=6+slack, h=1.7+vSlack);
+}
+
+module baseBody() {
+  difference() {
+    _bodySil(_width, _depth, _height, 4, 5, 2);
+
+    _mid = [_width / 2, _depth / 2, _height];
+
+    union() {
+
+      for (i = mirror4XY(midpoint = _mid, offsetX = (_width / 2) - 15, offsetY = (_depth / 2) - 10)) {
+        translate(v = i)
+          _lugAndMagnet();
+      }
+
+      screwHolePositions = concat(
+      mirror4XY(midpoint = _mid, offsetX = (_width / 2) - 25, offsetY = (_depth / 2) - 20),
+      mirror4XY(midpoint = _mid, offsetX = (_width / 2) - 15, offsetY = (_depth / 2) - 20),
+      mirror4XY(midpoint = _mid, offsetX = (_width / 2) - 25, offsetY = (_depth / 2) - 10)
+      );
+
+      for (i = screwHolePositions) {
+        translate(v = i) {
+          cylinder(r = m3RadiusSlacked, h = inf, center = true);
+
+        }
+      }
+
+    }
+  }
+}
 
 
+difference() {
+  baseBody();
+
+  union() {
+    minkowski() {
+      translate(v = [(_width - 130) / 2, (_depth - 150) / 2, - inf / 2])
+        cube(size = [130, 150, inf]);
+
+      cylinder(r = 5);
+    }
+  }
+}
+