- 3 sheets white foam board
- exacto knife
- clear packing tape
- optional: ribbon and tack
2. Tape the corners as well. Make sure everything is perfectly lined up when you tape so that it opens out straight. Now you should be able to fold up like the picture.
3. Now take your third piece, and lay it on your work surface. Lay the other foam board across it in the opposite direction, and trace a line. You want this last piece to be a square.
4. Use your exacto knife to cut through the line you traced. Be careful with the knife, and yes, I do realize that my hands like they belong to an 85 year old woman.
5. Here comes the sort of confusing-to-explain part. You want this little square to fold behind your top piece, so you have to tape it to the back of only the top sheet of foam board, just like you did with the original set. You can open your first set and hang one side over your table to make sure you don’t tape it.
6. When you’re done, you can fold the whole thing completely flat for storage. When your ready to use it, set it up next to a sunny window, and just fold everything up. If you’d like to really secure the loose edge, tape a piece of ribbon to the back, and then tack it to the other loose edge.