Originally Posted by jackie o.
There are many references on the web. The "usual" formula is to take the size of your finished block, and divide by 3. Then add 1/2 inch to that measurement, and you will have the size of the small corner squares.
So, for a 6" (finished size) block, you will cut the small corner squares 2.5 inches.
Does that make sense? Hope so!!!
So since a charm is 5 inches---
5 divided by 3 is 1.66
and then you add 1/2 an inch
So 1.66 + .5 = 2.16
So I'll just cut the corners a little over 2 inches. :-)