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)
Then this one by Xrobots
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?