Originally Posted by Gennynut

I want to make a rail fence quilt, lap size, using 3 colors. The finished blocks would be 12 inch. This is by making 4- 6 1/2 inch squares jioned to make the 12 1/2 unfinished square. the strips would be 2 1/2 inches . The quilt would need 12 blocks. How much of each fabric would I need??