Most foam builders uses 1/4 - 1/2 inch EVA foam floor mats for the bulk of their build, and craft foam for details. For more information, you'd be best to go to the "Help for foam" thread. And for future reference, when you have a question like this, post it in a help thread instead of creating a new thread. Helps keep things more organized and you're more likely to get more of a response.
