Just received mine and will return it. Reading the other reviews, maybe I received a "bad" one, but mine doesn't blend well where the straight edges meet the curved portion after crimping like the angle or width in the tool is not correct. So you have straight and then a curve and where they join is very obvious. I tried it on paper, heavy plastic, cardboard, etc. all with the same results. I expected more quality from this product as I love my crop-a-dile; will stick to my regular corner punch.