I love my June Taylor Shape Cut Pro and use it several times a week. Although it was expensive, I have certainly gotten my money's worth. I make lots of quick quilts using pre cuts. I often cut my own jelly rolls, charm squares, and layer cakes with that ruler. I have the instructions for cutting shapes like triangles; but have never tried it. Cutting with the June Taylor ruler makes cutting so much faster and I know what I cut will be accurate. I have 2 other June Taylor rulers. One cuts 1/2" which I use frequently. If I need to cut 3" squares, I use slivers of blue painter's tape to mark every 3" on that ruler. My third ruler cuts eighths. When I have to cut 3/8" or 7/8" squares, etc. that ruler is a life saver. I am a huge fan of June Taylor rulers!