I thought I should address this comment left yesterday.
Good Morning - do you cut the 6", 4.5" and 2.5" for a particular reason. Do you find these sizes easier to work with for the type of quilts you make - I was surprised you didn't have any 3 or 3/12".
The answer to why I cut the sizes I do: Know thyself. I know what I use most often, what I can cut down into other sizes without having to take the same 92 blue fabrics off the shelf again to cut one piece. As far as why I didn't cut 3 or 3.5"? It is a simple math solution. 6.5" + 4.5" + 2.5" = 13.5" or 3/8 of a yard. There simply wasn't enough of most of the fabrics to cut 2 more sizes of strips. I have a lot of half yard cuts. By the time I do a clean up cut and then cut 13.5" there is about 4" left.
I can easily cut a 4.5" strip into a 3" strip and have a 1.5" strip left over. Also 2.5" and 4.5" work with each other in many patterns. If you want to do a lot of cutting, you just have to know yourself and your most used sizes.
As far as questions on other methods of triangles, I have discussed that before here which has links to previous posts about Thangles also. I have also shown rulers here which give the same end product.
