diff --git a/Preamble/Main.tex b/Preamble/Main.tex
index 6ddeed3..1fd2ecc 100755
--- a/Preamble/Main.tex
+++ b/Preamble/Main.tex
@@ -734,6 +734,25 @@
     small dot/.style={fill=black,circle,scale=0.3},
 }
 
+\tikzset{
+  double -latex/.style args={#1 colored by #2 and #3}{    
+    -latex,line width=#1,#2,
+    postaction={draw,-latex,#3,line width=(#1)/3,shorten <=(#1)/4,shorten >=4.5*(#1)/3},
+  },
+  double round cap-latex/.style args={#1 colored by #2 and #3}{    
+    round cap-latex,line width=#1,#2,
+    postaction={draw,round cap-latex,#3,line width=(#1)/3,shorten <=(#1)/4,shorten >=4.5*(#1)/3},
+  },
+  double round cap-stealth/.style args={#1 colored by #2 and #3}{
+    round cap-stealth,line width=#1,#2,
+    postaction={round cap-stealth,draw,,#3,line width=(#1)/3,shorten <=(#1)/3,shorten >=2*(#1)/3},
+  },
+  double -stealth/.style args={#1 colored by #2 and #3}{
+    -stealth,line width=#1,#2,
+    postaction={-stealth,draw,,#3,line width=(#1)/3,shorten <=(#1)/3,shorten >=2*(#1)/3},
+  },
+}
+
 
 \newcommand{\FB}[7]{%
   \begin{tikzpicture}[auto, node distance=2cm,>=latex']
diff --git a/sections/Theorie.tex b/sections/Theorie.tex
index 65ddeda..740c78c 100755
--- a/sections/Theorie.tex
+++ b/sections/Theorie.tex
@@ -85,7 +85,7 @@ Zur näherungsweisen Verarbeitung der Differentialgleichung wird hier das Variat
 
 %
 \begin{figure}[H]\centering
-\begin{tikzpicture}[scale=2.7]
+\begin{tikzpicture}[scale=2.5]
 {
   \fill[color=black!5] (0,0,1) -- (1,0,1) -- (1,1,1) -- (0,1,1) -- cycle;
   \fill[color=black!15] (0,1,1) -- (1,1,1) -- (1,1,0) -- (0,1,0) -- cycle;
@@ -119,22 +119,66 @@ Zur näherungsweisen Verarbeitung der Differentialgleichung wird hier das Variat
   \draw[->] (.5,1,.5) -- (.5,1.4,.5) node[right] {$\sigma\ti{yy}$};
     
   % Koordinatensystem
-  \draw[->] (-1,0,0) -- (-.7,0,0) node[right] {$x$};
-  \draw[->] (-1,0,0) -- (-1,.3,0) node[above] {$y$};
-  \draw[->] (-1,0,0) -- (-1,0,.3) node[below left] {$z$};
+  \draw[->] (-.9,0,0) -- (-.6,0,0) node[right] {$x$};
+  \draw[->] (-.9,0,0) -- (-.9,.3,0) node[above] {$y$};
+  \draw[->] (-.9,0,0) -- (-.9,0,.3) node[below left] {$z$};
 }
 \end{tikzpicture}
-\hspace{2em}
-\raisebox{0.9em}{
-\begin{tikzpicture}[scale=2]
+\hspace{.5em}
+%\raisebox{0.9em}{
+%\begin{tikzpicture}[scale=2]
+%{
+%  \fill[color=black!5] (0,0,0) -- (1,0,0) -- (1,1,0) -- (0,1,0) -- cycle;
+%  \draw[color=black!50] (0,0,0) -- node[below, color=black] {$\dif{x}$} (1,0,0) -- (1,1,0) -- node[above, color=black] {Vergleich mit 1D} (0,1,0) -- cycle;
+%  \draw[<-] (-0.5,0.5,0) -- (0,0.5,0) node[above left] {$\sigma(x)$};
+%  \draw[->] (1,0.5,0) node[above right] {$\sigma(x+\dif{x})$} -- (1.5,0.5,0);
+%}
+%\end{tikzpicture}
+%}
+\begin{tikzpicture}[scale=2.5]
 {
-  \fill[color=black!5] (0,0,0) -- (1,0,0) -- (1,1,0) -- (0,1,0) -- cycle;
-  \draw[color=black!50] (0,0,0) -- node[below, color=black] {$\dif{x}$} (1,0,0) -- (1,1,0) -- node[above, color=black] {Vergleich mit 1D} (0,1,0) -- cycle;
-  \draw[<-] (-0.5,0.5,0) -- (0,0.5,0) node[above left] {$\sigma(x)$};
-  \draw[->] (1,0.5,0) node[above right] {$\sigma(x+\dif{x})$} -- (1.5,0.5,0);
+  \fill[color=black!25] (1,0,1) -- (1,0,0) -- (1,1,0) -- (1,1,1) -- cycle;
+  \fill[color=black!15] (0,1,1) -- (1,1,1) -- (1,1,0) -- (0,1,0) -- cycle;
+  \fill[color=black!5] (0,0,1) -- (1,0,1) -- (1,1,1) -- (0,1,1) -- cycle;
+  
+  \draw[color=black!50] (0,0,1) -- (1,0,1);
+  \draw[color=black!50] (0,0,1) -- (0,1,1);
+  \draw[color=black!50] (1,0,1) -- (1,0,0);
+    
+  \draw[color=black!50] (0,1,1) -- (0,1,0);
+  \draw[color=black!50] (1,0,0) -- (1,1,0);
+  \draw[color=black!50] (0,1,0) -- (1,1,0);
+    
+  \draw[color=black!50] (0,1,1) -- (1,1,1);
+  \draw[color=black!50] (1,0,1) -- (1,1,1);
+  \draw[color=black!50] (1,1,1) -- (1,1,0);
+    
+  \draw[color=black!50, dashed] (0,0,0) -- (1,0,0);
+  \draw[color=black!50, dashed] (0,0,0) -- (0,1,0);
+  \draw[color=black!50, dashed] (0,0,0) -- (0,0,1);
+    
+  % X-Ebene
+  \fill[color=black!35] (1,.45,.55) -- (1,.45,.45) -- (1,.55,.45) -- (1,.55,.55) -- cycle;
+  \fill[color=black!15] (0,.45,.55) -- (0,.45,.45) -- (0,.55,.45) -- (0,.55,.55) -- cycle;
+  \draw[->] (1,.5,.5) -- (1.4,.5,.5) node[right] {$\displaystyle\sigma\ti{xx}+\frac{\partial\sigma\ti{xx}}{\partial x}\dif x$};
+  \draw[->] (0,.5,.5) -- (-.4,.5,.5) node[left] {$\sigma\ti{xx}$};
+    
+  % Y-Ebene
+  \fill[color=black!25] (.45,1,.55) -- (.55,1,.55) -- (.55,1,.45) -- (.45,1,.45) -- cycle;
+  \fill[color=black!15] (.45,0,.55) -- (.55,0,.55) -- (.55,0,.45) -- (.45,0,.45) -- cycle;
+  \draw[->] (.5,1,.5) -- (.9,1,.5) node[above right=-10pt] {$\displaystyle\tau\ti{yx}+\frac{\partial\tau\ti{yx}}{\partial y}\dif y$};
+  \draw[->,dashed] (.5,0,.5) -- (.1,0,.5) node[below] {$\tau\ti{yx}$};
+    
+  % Z-Ebene
+  \fill[color=black!12] (.45,.45,1) -- (.55,.45,1) -- (.55,.55,1) -- (.45,.55,1) -- cycle;
+  \fill[color=black!12] (.45,.45,0) -- (.55,.45,0) -- (.55,.55,0) -- (.45,.55,0) -- cycle;
+  \draw[->] (.5,.5,1) -- (.9,.5,1) node[below right=-10pt] {$\displaystyle\tau\ti{zx}+\frac{\partial\tau\ti{zx}}{\partial z}\dif z$};
+  \draw[->,dashed] (.5,.5,0) -- (.1,.5,0) node[above right] {$\tau\ti{zx}$};
+    
+  % fx
+  \draw[double -latex=2pt colored by black!80 and white] (.5,.5,.5) node[right] {$f\ti{x}$} -- (.1,.5,.5);
 }
 \end{tikzpicture}
-}
 \caption{Kräfte an einem infinitesimalen Volumenelement}
 \label{pgfplots:Kraeftegleichgewicht}
 \end{figure} \vspace{-1.5em}