100% recycled magnetic bulletin board!

Step 4 Glue it back together

Now that the corks are upside down, put some glue (Don't use too much glue! it will leak through the corks and ruin this project!) on the cardboard and carefully place it back on the corks. Then place another box on top of that, and some weights on top of that. (The box will help distribute the wieght)
It's best to do this all on a hard flat surface, unlike what I did. ;-)