I need some tips on finding foam for foam wing cores locally.  I can get 4x8 sheets of 2" ,( realy 1 3/4) EPS, but that is not easy to cut, becaue there is not much extra top and bottom.  Works fin for smaller stuff.  I would really like a few sheets of 3" or 4" foam. 

I can get the local building supply place to get me a whole pallet, but I don't have the space.  A few sheets would last a long time.   

Oh yeah, I don't want to pay 15$ to ship 5$ work to foam either, there ought to be a way to get a small bundle locally.

Can I glue up 2 - 2"sheets to get enough thickness?

And if you have a profile and shape of the wing I have a CNC hot wire cutter at home.

Thanks that is what I am looking for. 

I think I remember Bobby Hunt saying he had to get help to get the foam home he bought.  I think it was 4 ft X 4 ft X 16 ft block. Maybe he will jump on this.  I know it is fun haulling 2 in X 6 in x 12 ft lumber on my Ford Explorer.  I had 24 peices up on top.   

I noticed the question about gluing together two sheets for greater thickness.   Yes if you are careful and use a glue that will set up without air like epoxy or maybe better yet poly glues which are activated with a very fine mist of water to the surface you dont put the glue on.    Then lots of weight to hold the two together tightly till the glue sets up.   This is kinda like sheeting a wing in that you really want the minimum of glue.   That much foam will have some weight though and you probably need to consider coring it. 
 There is quite a bit of good info on the web if you search using "foam wing cutting" including a video a friend and I did a few years back that my son now sells for me.   Cutting your own foam is fun just plan on doing a few "test" wings before getting the hang of it.   That said I have hand cut hundreds of wings mostly for combat models in the past 15 years.   The techniques are not hard to learn it just takes a little time and practice.
Bob