Hello,
I've been flying RC for about 17 years now and I am trying to get into scratch building with foam. I built myself a foam cutter and it works great ! My cutting thus far is limited to old coolers, styro cups, etc. My first project is to build a new wing for an old sweet stick that has been in the attic for 10 years.

Is there a good source for EPS foam? (Is there a better foam to use for 40 + sized aircraft? I intend to sheet with balsa. I can't seem to find foam block in my area, but if anyone knows of retailers that sell it (or websites to order it), I would be most grateful!

Thank you!!
Robert