[Tex/LaTex] Blackboard bold capital Delta with Euler fonts

Question

I would like to draw a blackboard bold capital delta, but I would like to draw this while using the Euler package to get the Euler fonts.

I have tried both solutions mentioned in the first answer to this question but either they don't seem to work with capital delta or it is overwritten by the Euler package.

I also took a look at this question but I am not satisfied with the solution — the symbol has two peaks.

\documentclass{article}

\usepackage{euler}
\usepackage{bbm}
\usepackage{mathbbol}

\newcommand{\DD}{\Delta\!\!\!\Delta}

\begin{document}

     $\mathbbm{\Delta}$ 
     %Using mathbbm -- isn't math bold

     $\mathbb{\Delta}$ 
     %Using mathbbol -- still isn't math bold

     $\DD$ 
     %Hacky, and I dislike the two peaks

\end{document}

Answer 1

This might be what you want:

\documentclass{article}
\usepackage{euler}
\usepackage{pict2e,picture}

\makeatletter
\DeclareRobustCommand{\bbDelta}{{\mathpalette\bb@Delta\relax}}
\newcommand{\bb@Delta}[2]{%
  \begingroup
  \sbox\z@{$\m@th#1\Delta$}%
  \dimendef\Dht=6 \dimendef\Dwd=8
  \setlength{\Dwd}{\wd\z@}%
  \setlength{\Dht}{\ht\z@}%
  \begin{picture}(\Dwd,\Dht)
  \put(0,0){$\m@th#1\Delta$}
  \put(.42\Dwd,.7\Dht){\line(10,-26){.25\Dht}}
  \end{picture}%
  \endgroup
}
\makeatother

\begin{document}

x$\Delta\bbDelta$ $\scriptstyle\Delta\bbDelta$

x$\bbDelta\Delta$ $\scriptstyle\bbDelta\Delta$

\end{document}