I've been using Superglue on all the foam in my build.
It works great, bonds very well.
I'd use 3M Contact spray, super 77 or high strength 90.
Hot glue ( but get a temperature controlled glue gun
Use this tut by familyman for the first part of your build (just checked and the pics have dissapeared, but it's still usable as tut)
http://www.therpf.com/f24/tip-making...a-foam-143294/
Then this one by Xrobots
http://www.therpf.com/f24/how-plasti...pieces-146539/
Hope that helps
hm... i forgot to say.. after i glue it together i want to be able to... use a heat gun and bend the shape of it.... are any of these glue gonna hold.. i do that?
I use the same as Rebelscum as well as 3m Foamfast 74 and also Weldwood contact cement.
how do u use these sprays with out getting the parts that u don't need to stick?