So three years ago I started making a halo recruit helmet out of EVA foam. It was the first time I have ever worked with or used eva foam, and my for st time really building anything. I got my own knife, boug ht my first tub of contact cement, and got to work. I finished the helmet in a day or two. It came out pretty good being my first time, but it had so many holes, bad seams, missalignments, and it had contact cement stains everywhere.