Add option for fixed side modules. This simplifies assembly and removes some awkward printing topology

rack/print/yBarRight_P.scad

@@ -0,0 +1,7 @@
+use <../yBar.scad>
+
+// Oriented for 3d printing.
+// Supports required at XY wall connections, and depending on roundness
+
+mirror(v=[1,0,0])
+yBar();