I'm pretty sure it's the "Point Turner or the "bone folder". I have both & have used them both equally as well. Just be carreful not to push the point thru your corner!! The voice of experience!! lol! I have also used a knitting needle, and the 'stick' that comes with fiberfil stuffing. It looks like a wooden chopstick. It's not as pointy so you can't get into your corner as well. If you round your corners slightly, they will look bettter. Joanns has them in the Notions aisle. They're not expensive but Joann's often has Notions 1/2 price! Good luck....have fun!!!! :D