Just wanted to show you what i've been working on the past day and a bit a more detailed description can be found on my blog (http://biel-tan-wip.blogspot.co.uk/
), the original papercraft terrain was from this site: http://paperwargames.blogspot.co.uk/2011/08/bunker-40k.html
1 A4 sheet of blue foam 0.5mm thick,
Sharp Xacto knife,
Hot glue gun, you could use PVA or wood glue but I found the hot glue was great as it dries solid pretty quickly and allows for easy construction.,
Probably with a general disclaimer at this point, Xacto knifes will be very sharp and they do glide through the foam with little resistance so it's very easy to cut through and has the potential to cause injury, on a similar theme the glue gun (if you use one) does get really really hot, as does the glue itself, you don't want to touch the metal heated element at the end of the glue gun to the foam as it will melt it and if it comes into contact with your skin you will burn yourself.
At the end of the basic construction of the project I was left with roughly a third of the blue foam left so in terms of material cost it was pretty cheap.
First 4 pics are as follows Materials I started with, Selection of cut foam parts that were then assembled, Angled pieces showing to what degree I cut them for the angled sections and then How I used the papercraft bits to make sure the angles were glued together in the right way.