My friend here in Indiana taught me how to make them.
I did a search online as they are called The Original Quilt Patis
The ones I bought are 1 inch per side Hexagons, plastic foundations
http://quiltpati.tripod.com/
I called her on the phone and she told me what stores in my area carried them so I went and picked them up at store. I called the store to make sure they had them before I drove there.
Also you can order them directly from that website, I talked to the owner by phone and she is so nice. Enjoy!
The hexagons are addictive, so nice that you can carry them with you to work on in the car, Dr. appts., etc.
Karen