As the maker of many triple rail fence quilts I suggest you consider using an inner border of a fabric NOT used in your blocks....otherwise it appears the blocks are 'bleeding' into the border. Using a different color "stops" the design of the top before the borders are applied.
Cut your block strips a 3" wide by 42" (or width of fabric from selvage edge to selvage edge). You will need 23 strips of each color. The Blocks will measure approximately 7.5" square. ("Approximately" is the operative word!)
The 3 colors chosen per block should be sewn together using your closest 1/4" seam allowance. Make 23 sets of these.
Press the three strips all to one side. Measure across several of the strip sets to find an average measurement for the width of the strip sets.
Cut the strips into subset segments this average measurement size....they will be approximately +/-7.5", depending on your seam allowance, the evenness of your seams, the accuracy of your cutting, and your pressing.
Once you have cut the strip segments, you will have all your blocks, you will need 120 of them. They will be set 10 blocks across and 12 blocks down.
Cut your inner border strips at 2.5" x 42" (or width of the fabric from selvage edge to selvage edge); you will need 10 strips for the inner border. Using that different fabric here, as a stopper border will improve the finished look of your quilt.
Cut your outer border strips at 3.5" x 42"; you will need 10 or 11 strips for the outer border.
Your quilt should finish approximately 85”x 100”.
This pattern written for a different size and color setting may help you anyway.
Jan in VA
Last edited by Jan in VA; 03-25-2013 at 04:27 PM.