refactor

rack/rack-tray/rack-tray.scad

@@ -0,0 +1,91 @@
+
+eps=0.01;
+vU = 2;
+uHeight = 10;
+
+plateScrewDiffV = uHeight*vU;
+plateScrewDiffH = 180;
+
+plateScrewToHEdge = 4.5;
+plateScrewToVEdge = 5.5;
+
+frontPlateThickness = 3;
+
+frontPlateV = plateScrewDiffV + 2*plateScrewToHEdge;
+frontPlateH = plateScrewDiffH + 2*plateScrewToVEdge;
+
+//////////////////////////////////////////////////////
+
+trayOuterHeight = 28;
+trayOuterWidth = 168;
+trayOuterDepth = 130;
+
+trayBottomThickness = 2;
+traySideThickness = 3;
+trayFrontThickness = 2;
+
+
+trayInnerWidth = trayOuterWidth - 2*traySideThickness;
+trayInnerDepth = trayOuterDepth - trayFrontThickness;
+trayInnerHeight = trayOuterHeight - trayBottomThickness;
+
+module _trayBody() {
+
+    difference() {
+        cube(size = [trayOuterWidth, trayOuterDepth, trayOuterHeight]);
+
+        union() {
+            translate(v = [traySideThickness, trayFrontThickness, trayBottomThickness])
+                cube(size = [trayInnerWidth + eps, trayInnerDepth + eps, trayInnerHeight + eps]);
+
+
+            translate(v=[0,0, trayOuterHeight])
+                rotate(a=[-atan(trayInnerHeight/trayOuterDepth),0,0])
+                    cube(size=[trayOuterWidth+eps, 2*trayOuterDepth+eps, trayInnerHeight+eps]);
+
+            translate(v=[5+traySideThickness,0,trayBottomThickness])
+            cube(size=[trayInnerWidth-10, trayFrontThickness+eps, trayOuterHeight]);
+        }
+    }
+}
+
+// todo make a nice module for this (triangular prism)
+module _sideHole_N() {
+    scale(v=[2,0.65,0.65])
+        difference () {
+            cube(size = [trayOuterWidth, trayOuterDepth, trayOuterHeight]);
+            translate(v = [0, 0, trayOuterHeight])
+                rotate(a = [- atan(trayInnerHeight / trayOuterDepth), 0, 0])
+                    cube(size = [trayOuterWidth + eps, 2 * trayOuterDepth + eps, trayInnerHeight + eps]);
+        }
+}
+
+
+module trayBody() {
+    union() {
+        difference() {
+            _trayBody();
+            union() {
+                // bottom holes
+                for (i = [0:7]) {
+                    translate(v = [35, i * 15 + 10, - eps])
+                        *cube(size = [100, 5, 10]);
+                }
+                translate(v=[-10,5,5])
+                _sideHole_N();
+            }
+        }
+
+        // lugs for front
+        translate(v=[0,-2,0])
+            cube(size=[5,2,5]);
+        translate(v=[trayOuterWidth-5,-2,0])
+            cube(size=[5,2,5]);
+    }
+}
+
+
+
+
+//trayBody();
+