$ sudo apt-get install U
  --no-install-recommends gcc-multilib U
  libc6-amd64 libc6-dev-amd64


$ sudo dpkg --add-architecture amd64


$ sudo apt-get update


$ sudo aptitude --without-recommends install blender:amd64


sudo debootstrap --arch=amd64 --variant=minbase unstable /64 http://ftp.us.debian.org/debian


export DISPLAY=:0
export HOME=/home/your_user_directory


PS1='\u@\h-64bit\w\$ '