diff --git a/back.scad b/back.scad
index 120078b..c9d7f96 100644
--- a/back.scad
+++ b/back.scad
@@ -59,10 +59,10 @@
  */
 
 // Abgerundete Außenkanten.
-rounded_edges = true;
+rounded_edges = false;
 
 // Abgeschrägte Außenkanten.
-beveled_edges = false;
+beveled_edges = true;
 
 // Temporäre Stützstrukturen in den Bohrungen.
 support = false;
@@ -428,44 +428,6 @@ module outer() {
             import("./svg/back loops.svg");
         }
     }
-}
-
-
-/*************************************************************************
- * Die Hülle.                                                            *
- *************************************************************************/
-
-module body_back() {
-    if (rounded_edges || beveled_edges) {
-        intersection() {
-            union () {
-                outer();
-            }
-
-            color(color_top)
-            minkowski() {
-                linear_extrude(height=1) {
-                    import("./svg/back hull.svg");
-                }
-
-                $fn = $preview ? 4 : 16;
-                if (beveled_edges) {
-                    // Abgeschrägte Kanten.
-                    cylinder(h=top+space, r1=0.5, r2=(top+space)/2);
-                } else {
-                    // Abgerundete Kanten.
-                    hull() {
-                        for (i = [1:5]) {
-                            translate([0, 0, i - 1])
-                            cylinder(r=sin(i * (90/5)) * 2, h=top + space);
-                        }
-                    }
-                }
-            }
-        }
-    } else {
-        outer();
-    }
 
     // Stützen für die Buttons.
     if (button_support) {
@@ -483,6 +445,47 @@ module body_back() {
             }
         }
     }
+}
+
+
+/*************************************************************************
+ * Die Hülle.                                                            *
+ *************************************************************************/
+
+module body_back() {
+    if (rounded_edges || beveled_edges) {
+        difference() {
+            union () {
+                outer();
+            }
+
+            color(color_top)
+            translate([0, 0, -0.1])
+            minkowski() {
+                linear_extrude(height=0.1) {
+                    import("./svg/back outline.svg");
+                }
+
+                $fn = $preview ? 4 : 8;
+                if (beveled_edges) {
+                    // Abgeschrägte Kanten.
+                    cylinder(h=4, r1=1.5, r2=0);
+                } else {
+                    // Abgerundete Kanten.
+                    // Dafür generieren wir im folgenden einen konkaven Kegel.
+                    union() {
+                        curve = [1.34, 1.07, 0.84, 0.63, 0.46, 0.32, 0.2, 0.11, 0.05, 0.01, 0];
+                        for (i = [0:len(curve)-2]) {
+                            translate([0, 0, i*0.5])
+                            cylinder(h=0.5, r1=curve[i], r2=curve[i+1]);
+                        }
+                    }
+                }
+            }
+        }
+    } else {
+        outer();
+    }
 
     // Stützen für die Analog sticks.
     if (stick_support) {
diff --git a/front.scad b/front.scad
index 06e0aa3..3ea6699 100644
--- a/front.scad
+++ b/front.scad
@@ -47,10 +47,10 @@ include <colors.scad>;
  */
 
 // Abgerundete Außenkanten.
-rounded_edges = true;
+rounded_edges = false;
 
 // Abgeschrägte Außenkanten.
-beveled_edges = false;
+beveled_edges = true;
 
 // Aussparungen für den linken Analog-Stick.
 analog_stick_l = true;
@@ -336,26 +336,30 @@ module border_strut(width, length, height) {
 module casing_front() {
     difference() {
         if (rounded_edges || beveled_edges) {
-            intersection() {
+            difference() {
                 union () {
                     outer();
                 }
 
                 color(color_top)
+                translate([0, 0, -0.1])
                 minkowski() {
-                    linear_extrude(height=1) {
-                        import("./svg/front hull.svg");
+                    linear_extrude(height=0.1) {
+                        import("./svg/front outline.svg");
                     }
-                    $fn = $preview ? 4 : 16;
+
+                    $fn = $preview ? 4 : 8;
                     if (beveled_edges) {
                         // Abgeschrägte Kanten.
-                        cylinder(h=top+space, r1=0.5, r2=(top+space)/2);
+                        cylinder(h=4, r1=1.5, r2=0);
                     } else {
                         // Abgerundete Kanten.
-                        hull() {
-                            for (i = [1:5]) {
-                                translate([0, 0, i - 1])
-                                cylinder(r=sin(i * (90/5)) * 2, h=top + space);
+                        // Dafür generieren wir im folgenden einen konkaven Kegel.
+                        union() {
+                            curve = [1.34, 1.07, 0.84, 0.63, 0.46, 0.32, 0.2, 0.11, 0.05, 0.01, 0];
+                            for (i = [0:len(curve)-2]) {
+                                translate([0, 0, i*0.5])
+                                cylinder(h=0.5, r1=curve[i], r2=curve[i+1]);
                             }
                         }
                     }
diff --git a/svg/back hull.svg b/svg/back hull.svg
deleted file mode 100644
index a7a2daf..0000000
--- a/svg/back hull.svg	
+++ /dev/null
@@ -1,79 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="150mm"
-   height="110mm"
-   viewBox="0 0 150 110"
-   version="1.1"
-   id="svg8"
-   inkscape:version="1.0.2 (e86c870879, 2021-01-15)"
-   sodipodi:docname="back hull.svg">
-  <defs
-     id="defs2">
-    <inkscape:path-effect
-       effect="offset"
-       id="path-effect2953"
-       is_visible="true"
-       lpeversion="1"
-       linejoin_type="miter"
-       unit="mm"
-       offset="-2"
-       miter_limit="4"
-       attempt_force_join="true"
-       update_on_knot_move="true" />
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="2.3139015"
-     inkscape:cx="283.46457"
-     inkscape:cy="207.87402"
-     inkscape:document-units="mm"
-     inkscape:current-layer="layer1"
-     inkscape:document-rotation="0"
-     showgrid="false"
-     inkscape:showpageshadow="true"
-     inkscape:snap-bbox="true"
-     inkscape:bbox-nodes="true"
-     inkscape:snap-page="true">
-    <inkscape:grid
-       type="xygrid"
-       id="grid833"
-       units="mm"
-       spacingx="0.25"
-       spacingy="0.25"
-       empspacing="4" />
-  </sodipodi:namedview>
-  <metadata
-     id="metadata5">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Layer 1"
-     inkscape:groupmode="layer"
-     id="layer1">
-    <path
-       id="path1572"
-       style="display:inline;opacity:1;fill:#37abc8;stroke-width:4;stroke-linecap:round;stroke-linejoin:round"
-       d="m 31.5,3 c -0.291667,0 -0.836371,0.1644962 -1.585938,0.9140625 l -6.5,6.4999995 C 22.737286,11.090841 21.416667,12 20,12 H 10 c -4.4330505,0 -8,3.566949 -8,8 v 1 c 0,0 0.1497648,0.321639 0.4140625,0.585938 l 2,2 C 5.0908392,24.262714 6,25.583333 6,27 v 66 c 0,1.416667 -0.9091608,2.737286 -1.5859375,3.414062 l -2,2 C 2.1497648,98.67836 2,99 2,99 v 1 c 0,4.43305 3.5669495,8 8,8 h 1 c 0,0 0.321638,-0.14976 0.585938,-0.41406 l 2,-2 C 14.262711,104.90916 15.583333,104 17,104 H 29 V 92 c 0,-1.416667 0.909156,-2.737285 1.585938,-3.414062 l 2,-2 C 33.262714,85.90916 34.583333,85 36,85 h 77.5 c 0.79688,0 4,0.601562 4,4 v 19 H 140 c 4.43305,0 8,-3.56695 8,-8 v -1 c 0,0 -0.14976,-0.32164 -0.41406,-0.585938 l -2,-2 C 144.90916,95.737286 144,94.416667 144,93 V 27 c 0,-1.416667 0.90916,-2.737286 1.58594,-3.414062 l 2,-2 C 147.85024,21.321639 148,21 148,21 v -1 c 0,-4.433051 -3.56695,-8 -8,-8 h -10 c -1.41667,0 -2.73729,-0.909158 -3.41406,-1.585938 l -6.5,-6.4999995 C 119.33637,3.1644962 118.79167,3 118.5,3 H 113 v 6 c 0,2.104167 -1.79167,3 -3,3 h -8 C 100.58333,12 99.262714,11.090842 98.585938,10.414062 98.32164,10.149767 98,10 98,10 h -2.75 v 20 c 0,2.104167 -1.791667,3 -3,3 H 77 c -1.414296,3.43e-4 -2.711597,-0.883471 -3.414062,-1.585938 l -5,-5 C 67.90916,25.737286 67,24.416667 67,23 V 12 H 40 C 38.791667,12 37,11.104167 37,9 V 3 Z"
-       sodipodi:nodetypes="cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc" />
-  </g>
-</svg>
diff --git a/svg/back outline.svg b/svg/back outline.svg
new file mode 100644
index 0000000..d58d6ea
--- /dev/null
+++ b/svg/back outline.svg	
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   width="150mm"
+   height="110mm"
+   viewBox="0 0 150 110"
+   version="1.1"
+   id="svg8"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   sodipodi:docname="back outline.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
+  <defs
+     id="defs2">
+    <inkscape:path-effect
+       effect="offset"
+       id="path-effect2953"
+       is_visible="true"
+       lpeversion="1"
+       linejoin_type="miter"
+       unit="mm"
+       offset="-2"
+       miter_limit="4"
+       attempt_force_join="true"
+       update_on_knot_move="true" />
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="1.5800489"
+     inkscape:cx="281.63686"
+     inkscape:cy="248.41004"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     inkscape:document-rotation="0"
+     showgrid="false"
+     inkscape:showpageshadow="true"
+     inkscape:snap-bbox="true"
+     inkscape:bbox-nodes="true"
+     inkscape:snap-page="true"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1">
+    <inkscape:grid
+       type="xygrid"
+       id="grid833"
+       units="mm"
+       spacingx="0.25"
+       spacingy="0.25"
+       empspacing="4" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <path
+       id="rect1305"
+       style="fill:#4d4d4d;stroke:none;stroke-width:4;stroke-linecap:round"
+       d="M -5.0002116 -5.0002116 L -5.0002116 115.00022 L 154.99984 115.00022 L 154.99984 -5.0002116 L -5.0002116 -5.0002116 z M 31.499886 0.99993896 L 36.999809 0.99993896 C 38.999933 0.99993896 39.000203 2.9998169 39.000203 2.9998169 L 39.000203 8.9999674 C 39.000203 8.9999674 39.00019 9.1404571 39.052913 9.3162272 C 39.088063 9.4334073 39.146467 9.5664666 39.244116 9.6836466 C 39.292944 9.7422403 39.351571 9.7969686 39.421883 9.8438436 C 39.492196 9.8907184 39.574227 9.9296713 39.66993 9.957015 C 39.717781 9.970686 39.768995 9.981214 39.823926 9.9885376 C 39.878857 9.9958666 39.937642 9.9999064 40.000142 9.9999064 L 67.000045 9.9999064 C 69.000041 9.9999064 68.999923 11.999784 68.999923 11.999784 L 68.999923 23.000146 C 68.999923 23.750146 69.499862 24.500026 69.999862 25.000024 L 75.000073 30.000236 C 75.500073 30.500236 76.286455 31.000348 76.999951 31.000175 L 92.250183 31.000175 C 93.250181 31.000175 93.250122 30.000236 93.250122 30.000236 L 93.250122 8.9999674 C 93.250122 8.9999674 93.250063 8.0000285 94.250061 8.0000285 L 98.00022 8.0000285 C 98.750218 8.0000285 99.500096 8.4999679 100.0001 8.9999674 C 100.5001 9.4999664 101.24998 9.9999064 101.99998 9.9999064 L 110 9.9999064 C 110.0625 9.9999064 110.12132 9.9958576 110.17622 9.9885376 C 110.23112 9.9812136 110.28242 9.970686 110.33022 9.957015 C 110.42592 9.9296716 110.50796 9.8907185 110.57826 9.8438436 C 110.64858 9.7969686 110.70723 9.7422406 110.75603 9.6836466 C 110.80479 9.6251727 110.84369 9.5625673 110.87489 9.5001953 L 110.87489 9.4996785 C 110.99987 9.2496943 110.99994 8.9999674 110.99994 8.9999674 L 110.99994 2.9998169 C 110.99994 2.9998169 110.99982 0.99993896 112.99982 0.99993896 L 118.49974 0.99993896 C 119.49974 0.99993896 120.50007 1.5001078 121.50008 2.5001058 L 127.99994 8.9999674 C 128.12494 9.1249672 128.26566 9.2501996 128.418 9.3673869 C 128.57034 9.4845742 128.73447 9.5935141 128.90634 9.687264 C 129.16413 9.8278773 129.43944 9.9337456 129.71921 9.9776855 C 129.81248 9.9923365 129.90612 9.9999064 129.99982 9.9999064 L 140.00024 9.9999064 C 145.54022 9.9999064 150.00015 14.459823 150.00015 19.999813 L 150.00015 20.999752 C 150.00015 21.74975 149.50021 22.500148 149.00021 23.000146 L 146.99981 25.000024 C 146.49981 25.500024 145.99987 26.249904 145.99987 26.999902 L 145.99987 93.000008 C 145.99987 93.750006 146.49981 94.499888 146.99981 94.999886 L 149.00021 96.999764 C 149.50021 97.499762 150.00015 98.250159 150.00015 99.000159 L 150.00015 100.0001 C 150.00015 105.54008 145.54022 110 140.00024 110 L 117.4998 110 C 115.49982 110 115.49993 108.00013 115.49993 108.00013 L 115.49993 89.000252 C 115.49993 89.000252 115.50005 86.999858 113.50005 86.999858 L 35.99987 86.999858 C 35.249872 86.999858 34.49999 87.499797 33.999992 87.999797 L 32.000114 90.000191 C 31.500114 90.500189 31.000175 91.250071 31.000175 92.000069 L 31.000175 103.99985 C 31.000175 103.99985 30.999776 106.00025 28.99978 106.00025 L 16.999996 106.00025 C 16.249998 106.00025 15.500118 106.50019 15.000118 107.00019 L 13.00024 109.00007 C 12.500242 109.50005 11.749845 110 10.999845 110 L 9.9999064 110 C 4.4599176 110 0 105.54008 0 100.0001 L 0 99.000159 C 0 98.250159 0.49993996 97.499762 0.99993896 96.999764 L 2.9998169 94.999886 C 3.4998159 94.499888 3.9997559 93.750006 3.9997559 93.000008 L 3.9997559 26.999902 C 3.9997559 26.249904 3.4998159 25.500024 2.9998169 25.000024 L 0.99993896 23.000146 C 0.49993996 22.500148 0 21.74975 0 20.999752 L 0 19.999813 C 1.2533172e-15 14.459823 4.4599176 9.9999064 9.9999064 9.9999064 L 19.999813 9.9999064 C 20.374811 9.9999064 20.749955 9.8747483 21.093803 9.687264 C 21.265678 9.5935142 21.429802 9.4845742 21.582145 9.3673869 C 21.734489 9.2501996 21.875208 9.1249672 22.000208 8.9999674 L 28.500069 2.5001058 C 29.500065 1.5001078 30.499888 0.99993896 31.499886 0.99993896 z " />
+  </g>
+</svg>
diff --git a/svg/front hull.svg b/svg/front outline.svg
similarity index 52%
rename from svg/front hull.svg
rename to svg/front outline.svg
index 3398b8d..2aed9ec 100644
--- a/svg/front hull.svg	
+++ b/svg/front outline.svg	
@@ -6,7 +6,7 @@
    version="1.1"
    id="svg8"
    inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
-   sodipodi:docname="front hull.svg"
+   sodipodi:docname="front outline.svg"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns="http://www.w3.org/2000/svg"
@@ -23,9 +23,9 @@
      borderopacity="1.0"
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
-     inkscape:zoom="2.2345265"
-     inkscape:cx="283.28149"
-     inkscape:cy="207.87402"
+     inkscape:zoom="1.5800489"
+     inkscape:cx="362.64702"
+     inkscape:cy="266.13101"
      inkscape:document-units="mm"
      inkscape:current-layer="layer1"
      inkscape:document-rotation="0"
@@ -33,23 +33,16 @@
      inkscape:showpageshadow="true"
      inkscape:snap-bbox="true"
      inkscape:bbox-nodes="true"
+     inkscape:snap-page="true"
      inkscape:pagecheckerboard="0"
-     inkscape:deskcolor="#d1d1d1"
-     inkscape:window-width="1438"
-     inkscape:window-height="880"
-     inkscape:window-x="0"
-     inkscape:window-y="16"
-     inkscape:window-maximized="1">
+     inkscape:deskcolor="#d1d1d1">
     <inkscape:grid
        type="xygrid"
        id="grid833"
        units="mm"
        spacingx="0.25"
        spacingy="0.25"
-       empspacing="4"
-       originx="0"
-       originy="0"
-       visible="true" />
+       empspacing="4" />
   </sodipodi:namedview>
   <metadata
      id="metadata5">
@@ -59,7 +52,6 @@
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title />
       </cc:Work>
     </rdf:RDF>
   </metadata>
@@ -68,9 +60,8 @@
      inkscape:groupmode="layer"
      id="layer1">
     <path
-       id="rect1044-6"
-       style="display:inline;opacity:0.75;fill:#5fbcd3;stroke-width:2.11667;stroke-linecap:round;stroke-linejoin:round"
-       d="M 10,1.9609375 C 5.5124037,1.9609375 1.9609204,5.5124119 1.9609375,10 v 29 c 0,0 0.156853,0.34435 0.4257813,0.613281 l 1,1 C 4.1177941,41.344366 4.9609351,42.378512 4.9609375,44 v 40 c 0,1.621317 -0.8428218,2.655468 -1.5742187,3.386719 l -1,1 C 2.1179875,88.655396 1.9609375,89 1.9609375,89 v 1 c 0,4.487599 3.5514785,8.039087 8.0390625,8.039062 h 114 c 0,0 0.34437,-0.15687 0.61328,-0.425781 l 1,-1 c 0.73109,-0.731085 1.76523,-1.574219 3.38672,-1.574219 h 10 c 3.37965,-8e-5 6.03912,-2.659509 6.03906,-6.039062 V 79 c -1e-5,-1.653651 1.0743,-2.886765 1.57422,-3.386719 l 1,-1 C 147.8822,74.344364 148.03906,74 148.03906,74 V 10 c 0,-4.4875973 -3.55146,-8.0390625 -8.03906,-8.0390625 z"
-       sodipodi:nodetypes="sccsccscccsccsssccccscsss" />
+       id="rect1305"
+       style="fill:#4d4d4d;stroke:none;stroke-width:4;stroke-linecap:round"
+       d="M -5.0002116 -5.0002116 L -5.0002116 115.00022 L 154.99984 115.00022 L 154.99984 -5.0002116 L -5.0002116 -5.0002116 z M 9.9999064 0 L 140.00024 0 C 145.54023 3.0946786e-17 150.00015 4.459912 150.00015 9.9999064 L 150.00015 74.000134 C 150.00015 74.750135 149.50021 75.500011 149.00021 76.000012 L 148.00027 76.999951 C 147.50028 77.499971 147.00032 77.999829 147.00033 78.999829 L 147.00033 89.000252 C 147.00041 93.432246 143.4323 96.999659 139.0003 96.999764 L 129.00039 96.999764 C 128.2504 96.999764 127.5 97.500221 127 98.00022 L 126.00006 99.000159 C 125.50006 99.500158 124.75018 100.0001 124.00018 100.0001 L 9.9999064 100.0001 C 4.4599128 100.00013 0 95.540188 0 90.000191 L 0 89.000252 C 0 88.250252 0.49988811 87.499808 0.99993896 86.999858 L 1.9998779 85.999919 C 2.4999775 85.499919 2.9998169 84.75004 2.9998169 84.000041 L 2.9998169 43.999898 C 2.9998158 43.249901 2.4998771 42.500026 1.9998779 42.00002 L 0.99993896 41.000081 C 0.49993876 40.500075 -7.8332324e-17 39.750204 0 39.000203 L 0 9.9999064 C -2.116657e-05 4.459912 4.4599128 -1.2533172e-15 9.9999064 0 z " />
   </g>
 </svg>