Papercraft square has all the armies that you will need to form a warhammer 40K army….all you need is the rulebook!
It does include 2D models as well.-F4x4
Here is a sampling of the papercraft models
This link for the mini Terminators http://newobmij.tumblr.com/post/12645812652/papercraft-terminators
WANT TO MAKE your own terminator CHapter?
Check these blank templates out! http://www.flipitpapercombat.com/downloads/models/blankterminator.pdf