# [Tex/LaTex] how to make a cog/gear in LaTeX

fncychapgraphicstikz-pgf

I was wondering what would be a good way to make this in LaTeX. Basically, what I want to do with this is use it as a chapter heading. So basically it will be something like this:

cog chapter # Chapter name


What would be the best way to achieve this? Am I better off using the image or making it myself?

Thanks a lot for you time!

EDIT: I have done what the comments have recommended but I am having difficult implementing the gear into the chapter heading using titlesec. Here is the MWE:

\documentclass[12pt]{memoir}

\usepackage{tikz}
\usepackage{titlesec}

% #1 number of teeths
% #4 angle from start to end of the first arc
% #5 angle to decale the second arc from the first

\newcommand{\gear}[5]{%
\foreach \i in {1,...,#1} {%
[rotate=(\i-1)*360/#1]  (0:#2)  arc (0:#4:#2) {[rounded corners=1.5pt]
-- (#4+#5:#3)  arc (#4+#5:360/#1-#5:#3)} --  (360/#1:#2)
}}

\titleformat{\chapter}{\Huge\bfseries}{\usebox{\gear{18}{0.5}{0.4}{10}{2}}\thechapter}{20pt}{\Huge\b‌​fseries}

\begin{document}
\begin{tikzpicture}
\draw[thick] \gear{18}{0.5}{0.4}{10}{2};
\end{tikzpicture}

\chapter{Whatever}

\end{document}


EDIT 2: With the help of @Qrrbrbirlbel and @StefanKottwitz I have gotten the following:

\documentclass[12pt]{memoir}

\usepackage{tikz}
\usepackage{titlesec}

\newsavebox\gearbox
\newcommand{\gear}[5]{%
\begin{tikzpicture}
\draw[ultra thick]
\foreach \i in {1,...,#1} {%
[rotate=(\i-1)*360/#1]  (0:#2)  arc (0:#4:#2) {[rounded corners=1.5pt]
-- (#4+#5:#3)  arc (#4+#5:360/#1-#5:#3)} --  (360/#1:#2)
};\end{tikzpicture}}
\sbox\gearbox{\resizebox{!}{2em}{\gear{18}{2}{1.6}{10}{2}}}
\titleformat{\chapter}{\Huge\bfseries}{\usebox{\gearbox}\thechapter}{20pt}{\Huge\bfseries}

\begin{document}

\chapter{Whatever}

\end{document}


But I would like to have the gear look more like this and have the gear behind the chapter number. How can this be done?

\newsavebox{\chaptergear}