improve support side rail. also begin refactoring rack-mount to make more friendly

rack-mount/enclosed-box/boxHelper.scad

@@ -0,0 +1,53 @@
+include <../../rack/sharedVariables.scad>
+include <../common.scad>
+
+use <../sideRail.scad>
+use <../frontBoxHolder.scad>
+
+/*
+  (WIP) Enclosed box mounting system:
+  Helper file to use semi-enclosed side rails and a front plate to mount a box.
+  This system does not require any mounting holes for the enclosed box.
+
+  !!! Please also make sure that the correct rack frame preset is set in rackFrame.scad !!!
+*/
+
+// begin config ////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+boxWidth = 160;
+boxHeight = 27;
+boxDepth = 100;
+
+
+railDefaultThickness = 1.2;
+
+zOrientation = "middle";
+
+// Does not affect any part dimensions. Set this to true to visualize how a box wound be mounted.
+visualize = true;
+
+// end config //////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#cube(size=[boxWidth, boxDepth, boxHeight]);
+
+sideSupportRailBase(top=true, defaultThickness=railDefaultThickness, supportedZ=boxHeight, supportedY=boxDepth, supportedX=boxWidth, zOrientation=zOrientation);
+
+translate(v=[boxWidth,0,0])
+mirror(v=[1,0,0])
+sideSupportRailBase(top=true, defaultThickness=railDefaultThickness, supportedZ=boxHeight, supportedY=boxDepth, supportedX=boxWidth, zOrientation=zOrientation);
+
+translate(v=[0,0,10])
+rotate(a=[-90,0,0])
+*frontBoxHolder(
+u=2,
+plateThickness=3,
+cutoutOffsetX=(rackMountScrewWidth-147)/2,
+cutoutOffsetY=4.25,
+cutoutX=147,
+cutoutY=21.5,
+support=true,
+supportedZ=boxHeight,
+supportWidth=120,
+supportDepth=5,
+supportRailBaseThickness=1.75
+);