Problem: It is an old pattern and it has me cutting individual
four tiny triangles, to make a square. If the finished square
is 2-1/2" what size square do you use to use the method
of drawing corner to corner and sewing on either side then
doing it again to make a 4 triangle with two dark and two light.
Does anyone have a method or chart?

You add 1 1/4" to the finished block size if you are talking about quarter square triangles.
2 1/2" would be 3 3/4"

http://quilting.about.com/od/quickpi...er_squares.htm

This link helped me figure it out. I need diagrams!

http://quilting.about.com/od/quickpi..._squares_2.htm

http://www.patchwork-and-quilting.co...triangles.html

Hope they can help

LOL Justme and I think alike!