I tried to post this before, didn't show up! To draft your own use your existing twister tool (no matter what size) and use a 1 1/2" template on top of the twister tool. Square them up, and use a marker to line up the "twisted lines" from the center. I used an additional ruler to make sure the lines were trully straight. This will work on a larger template as well. The angles are worked out mathmatically and will translate into any size. Linda