diff --git a/front.scad b/front.scad
index d5d9710..dac3aa8 100644
--- a/front.scad
+++ b/front.scad
@@ -46,7 +46,7 @@ include <colors.scad>;
  * Anschlag 7 mm von der Platine.
  */
 
-// Abgerundete Kanten.
+// Abgerundete Kanten (aufwendig).
 rounded_edges = true;
 
 // Aussparungen für den linken Analog-Stick.
@@ -191,8 +191,7 @@ module screw_support(width, length) {
 
 // Bohrung für die Schrauben.
 module screw_drill() {
-    // Die "$preview"-Bedingung reduziert Feher bei der Vorschau.
-    cylinder(h=space + top + ($preview ? 0.2 : 0), r=drill/2, $fn=24);
+    cylinder(h=space + top, r=drill/2, $fn=24);
 }
 
 // Maske für Stellen, an denen der Rand nicht ganz auf der Platine aufliegen
@@ -328,11 +327,11 @@ module casing_front() {
             outer();
         }
 
-        // Vergrößere das zu substrahierende Objekt, um Darstellungsfehler
-        // in der Voransicht zu vermeiden.
         if ($preview) {
+            // Vergrößere das zu substrahierende Objekt, um Darstellungsfehler
+            // in der Voransicht zu vermeiden.
             translate([0, 0, -0.1])
-            resize([0, 0, top + struts + 0.4])
+            resize([0, 0, top + 0.2])
                 top_cutouts();
         } else {
             top_cutouts();
@@ -449,9 +448,6 @@ module casing_front() {
 // Plazierung der Bohrungen.
 difference() {
     casing_front();
-
-    // Bedingtes translate um Fehler bei der Vorschau auszubessern.
-    translate([0, 0, $preview ? -0.1 : 0])
     union() {
         for (i = [0:3]) {
             translate([drill_pos[i][0], drill_pos[i][1], 0])
@@ -460,13 +456,13 @@ difference() {
 
         // Die Löcher für die Analog-Sticks.
         if (analog_stick_l) {
-            linear_extrude(height = space * ($preview ? 1.2 : 1)) {
+            linear_extrude(height = space) {
                 import("./svg/front analog stick l.svg");
             }
         }
 
         if (analog_stick_r) {
-            linear_extrude(height = space * ($preview ? 1.2 : 1)) {
+            linear_extrude(height = space) {
                 import("./svg/front analog stick r.svg");
             }
         }
diff --git a/svg/front construction.svg b/svg/front construction.svg
index ae595c0..fc8f8f5 100644
--- a/svg/front construction.svg	
+++ b/svg/front construction.svg	
@@ -45,9 +45,9 @@
      borderopacity="1.0"
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
-     inkscape:zoom="1.5249621"
-     inkscape:cx="283.6136"
-     inkscape:cy="207.87402"
+     inkscape:zoom="2.3445271"
+     inkscape:cx="421.83347"
+     inkscape:cy="93.835554"
      inkscape:document-units="mm"
      inkscape:current-layer="layer7"
      inkscape:document-rotation="0"
@@ -1241,44 +1241,39 @@
      inkscape:label="Drawings">
     <path
        id="path3"
-       style="fill:#4d4d4d;fill-rule:evenodd;stroke:none;stroke-width:0.234796;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.234796;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
        d="m 126.14851,15.317419 c -0.49629,-0.0042 -0.8632,0.613548 -0.46951,1.138464 l 1.11995,1.306283 1.11995,-1.306283 c 0.55991,-0.746547 -0.4188,-1.680582 -1.11995,-0.746502 -0.20816,-0.277305 -0.4409,-0.390169 -0.65044,-0.391962 z" />
     <path
-       style="fill:#4d4d4d;fill-rule:evenodd;stroke:none;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:6;stroke-dasharray:none;stroke-opacity:1"
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:6;stroke-dasharray:none;stroke-opacity:1"
        d="m 110.41995,6.3150793 1.25,2.25 h -0.75 v 1.7499997 l -1.25,-2.2499997 h 0.75 z"
        id="path4"
        sodipodi:nodetypes="ccccccc" />
     <path
-       style="fill:#4d4d4d;fill-rule:evenodd;stroke:none;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
        d="m 97.250005,9.8150793 v -2.75 h 0.5 v -0.5 h 0.75 v 0.5 h 0.5 v 2.75 z"
        id="path5"
        sodipodi:nodetypes="ccccccccc" />
     <g
        id="g7"
-       transform="translate(-7.6541666,-27.500003)"
-       style="stroke:#4d4d4d">
-      <circle
-         style="fill:#4d4d4d;stroke:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:6;stroke-dasharray:none"
-         id="path9"
-         cx="77.654167"
-         cy="120.125"
-         r="1.375" />
-      <rect
-         style="fill:#999999;stroke:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:6;stroke-dasharray:none"
-         id="rect10"
-         width="1.5029907"
-         height="2.8845217"
-         x="76.898521"
-         y="118"
-         rx="0.75" />
-      <rect
-         style="fill:#4d4d4d;stroke:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:6;stroke-dasharray:none"
-         id="rect9"
-         width="0.5"
-         height="1.8845371"
-         x="77.400459"
-         y="118.5"
-         rx="0.25" />
+       transform="translate(-11.279167,-27.500003)">
+      <path
+         style="fill:none;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:6;stroke-dasharray:none"
+         id="path6"
+         sodipodi:type="arc"
+         sodipodi:cx="81"
+         sodipodi:cy="120"
+         sodipodi:rx="1.2500043"
+         sodipodi:ry="1.2500043"
+         sodipodi:start="5.4977871"
+         sodipodi:end="3.9269908"
+         sodipodi:open="true"
+         sodipodi:arc-type="arc"
+         d="m 81.883886,119.11611 a 1.2500043,1.2500043 0 0 1 0.270967,1.36225 A 1.2500043,1.2500043 0 0 1 81,121.25 a 1.2500043,1.2500043 0 0 1 -1.154853,-0.77164 1.2500043,1.2500043 0 0 1 0.270966,-1.36225" />
+      <path
+         style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
+         d="m 81.000001,118.75 v 1.75"
+         id="path7"
+         sodipodi:nodetypes="cc" />
     </g>
   </g>
 </svg>
diff --git a/svg/front drawings.svg b/svg/front drawings.svg
index 8db3044..66adc24 100644
--- a/svg/front drawings.svg	
+++ b/svg/front drawings.svg	
@@ -23,9 +23,9 @@
      borderopacity="1.0"
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
-     inkscape:zoom="1.5249621"
-     inkscape:cx="283.28572"
-     inkscape:cy="207.87402"
+     inkscape:zoom="1.3035139"
+     inkscape:cx="283.46456"
+     inkscape:cy="207.89959"
      inkscape:document-units="mm"
      inkscape:current-layer="layer1"
      inkscape:document-rotation="0"
@@ -71,27 +71,20 @@
      inkscape:groupmode="layer"
      id="layer1">
     <path
-       id="path3"
-       style="fill:#4d4d4d;fill-rule:evenodd;stroke:none;stroke-width:0.234796;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
-       d="m 126.14851,15.317419 c -0.49629,-0.0042 -0.8632,0.613548 -0.46951,1.138464 l 1.11995,1.306283 1.11995,-1.306283 c 0.55991,-0.746547 -0.4188,-1.680582 -1.11995,-0.746502 -0.20816,-0.277305 -0.4409,-0.390169 -0.65044,-0.391962 z" />
+       style="color:#000000;fill:#000000;fill-rule:evenodd;-inkscape-stroke:none"
+       d="m 126.15039,15.199219 c -0.59419,-0.005 -1.00568,0.737878 -0.56445,1.326172 l 0.002,0.0039 1.21094,1.414062 1.21094,-1.414062 0.004,-0.0039 c 0.31376,-0.418341 0.20068,-0.915784 -0.10937,-1.164063 -0.15503,-0.124139 -0.36054,-0.188534 -0.57617,-0.15039 -0.18564,0.03284 -0.368,0.177638 -0.53711,0.367187 -0.20288,-0.220131 -0.42408,-0.377053 -0.64063,-0.378906 z m -0.002,0.236328 c 0.16813,0.0014 0.36452,0.08781 0.55664,0.34375 l 0.0937,0.125 0.0937,-0.125 c 0.16177,-0.21552 0.32898,-0.309832 0.47656,-0.335938 0.14758,-0.0261 0.28137,0.01564 0.38867,0.101563 0.21462,0.171854 0.31256,0.511638 0.0664,0.839844 l -1.02539,1.195312 -1.02539,-1.195312 c -0.34616,-0.461537 -0.0234,-0.952591 0.375,-0.949219 z"
+       id="path3" />
     <path
-       style="fill:#4d4d4d;fill-rule:evenodd;stroke:none;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:6;stroke-dasharray:none;stroke-opacity:1"
-       d="m 110.41995,6.3150793 1.25,2.25 h -0.75 v 1.7499997 l -1.25,-2.2499997 h 0.75 z"
-       id="path4"
-       sodipodi:nodetypes="ccccccc" />
+       style="color:#000000;fill:#000000;fill-rule:evenodd;stroke-miterlimit:6;-inkscape-stroke:none"
+       d="M 110.32031,5.9296875 V 7.9648437 H 109.5 l 1.51953,2.7363283 V 8.6660156 h 0.82031 z m 0.19922,0.7714844 0.98047,1.7636719 h -0.67969 V 9.9277344 L 109.8418,8.1660156 h 0.67773 z"
+       id="path4" />
     <path
-       style="fill:#4d4d4d;fill-rule:evenodd;stroke:none;stroke-width:0.2;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
-       d="m 97.250005,9.8150793 v -2.75 h 0.5 v -0.5 h 0.75 v 0.5 h 0.5 v 2.75 z"
-       id="path5"
-       sodipodi:nodetypes="ccccccccc" />
-    <g
-       id="g7"
-       transform="translate(-7.6541666,-27.500003)"
-       style="stroke:#4d4d4d">
-      <path
-         id="path9"
-         style="fill:#4d4d4d;stroke:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:6;stroke-dasharray:none"
-         d="M 77.650411 118.50013 C 77.511911 118.50013 77.400297 118.61175 77.400297 118.75025 L 77.400297 120.13466 C 77.400297 120.27316 77.511911 120.38477 77.650411 120.38477 C 77.788911 120.38477 77.900525 120.27316 77.900525 120.13466 L 77.900525 118.75025 C 77.900525 118.61175 77.788911 118.50013 77.650411 118.50013 z M 78.401269 118.97091 L 78.401269 120.13466 C 78.401269 120.55016 78.066944 120.88448 77.651444 120.88448 L 77.648344 120.88448 C 77.232844 120.88448 76.898519 120.55016 76.898519 120.13466 L 76.898519 118.97762 A 1.375 1.375 0 0 0 76.278918 120.12484 A 1.375 1.375 0 0 0 77.654028 121.49995 A 1.375 1.375 0 0 0 79.029138 120.12484 A 1.375 1.375 0 0 0 78.401269 118.97091 z " />
-    </g>
+       style="color:#000000;fill:#000000;fill-rule:evenodd;-inkscape-stroke:none"
+       d="m 97.650391,6.4648437 v 0.5 h -0.5 v 2.9511719 h 1.949218 V 6.9648437 h -0.5 v -0.5 z m 0.199218,0.2011719 h 0.550782 v 0.5 h 0.5 V 9.7148438 H 97.349609 V 7.1660156 h 0.5 z"
+       id="path5" />
+    <path
+       id="path6"
+       style="color:#000000;fill:#000000;stroke-linecap:square;stroke-miterlimit:6;-inkscape-stroke:none"
+       d="M 69.621073 91.250244 L 69.621073 93.000008 L 69.820544 93.000008 L 69.820544 91.250244 L 69.621073 91.250244 z M 68.837659 91.47452 L 68.765828 91.5448 C 68.379934 91.930694 68.263978 92.513383 68.472823 93.017578 C 68.681668 93.521774 69.175071 93.849569 69.720809 93.849569 C 70.266546 93.849569 70.75995 93.521774 70.968795 93.017578 C 71.17764 92.513383 71.061688 91.930694 70.675789 91.5448 L 70.605509 91.47452 L 70.462882 91.61508 L 70.533162 91.687427 C 70.862264 92.016528 70.961385 92.509555 70.783276 92.939547 C 70.605169 93.369538 70.186228 93.650614 69.720809 93.650614 C 69.255389 93.650614 68.83645 93.369538 68.658341 92.939547 C 68.480234 92.509555 68.579356 92.016528 68.908455 91.687427 L 68.978735 91.61508 L 68.837659 91.47452 z " />
   </g>
 </svg>