Four Triangles was carved from a 2 inch square block of basswood. You begin carving off the corners to make a 14 sided shape. Then begin to carve out the square and triangle spaces. I used a knife the first time to release the triangles. It was to rough so the next one I carved I used a scroll saw blade to release the triangles. It was easier to clean up the cuts. I used the book Woodcarving Magic to help carving this. For me it was very challenging.