update on slide nut-only design

rack/print/eval_P.scad

@@ -0,0 +1,35 @@
+include <../xBar.scad>
+include <../yBar.scad>
+include <../mainRail.scad>
+
+
+// Evaluation print for slack config
+
+intersection() {
+  yBar();
+  halfspace(vpos=[0,-1,0], p=[0,joinCornerDepth,0]);
+}
+
+translate(v=[35,0,0])
+intersection() {
+    translate(v=[0,-xBarX + xBarSideThickness + 5,0])
+    xBar();
+
+    halfspace(vpos=[0,1,0], p=[0,0,0]);
+  }
+
+translate(v=[60,20,0])
+rotate(a=[0,0,90])
+intersection() {
+  multmatrix(mainRailPrintOrientation)
+  mainRail();
+
+  halfspace(vpos=[-1,0,0], p=[19,0,0]);
+
+  mainRailPrintOrientation = [
+      [cos(-90), 0, sin(-90), railTotalHeight],
+      [0, 1, 0, 0],
+      [-sin(-90), 0, cos(-90), 0],
+      [0, 0, 0, 1]
+    ];
+}