Tutorial for my version of a 'Disappearing Nine Patch' quilt using alternating coloured blocks.... The Quilt can be seen here A Girly Disappearing Nine Patch Quilt This tutorial is a work in progress.....thanks for your patience...... Cut 4 inch strips from width of fabric (WoF) Strip set 1......Sew with a 1/4 inch seam to make strip sets.... press seams away from the centre strip Strip set 2. press seams towards centre strip...... Strip set 3. Press seams toward centre strip. The strip sets should now measure 10 1/2 inches by WoF Cut strip sets into 4 inch sections and layout as 2 x 'nine patch' blocks as shown with black running through the diagonal on one block and pink running through the diagonal on the second block. Block 1 needs two sections from Strip set 1 and one section from Strip set 2 Block 2 needs two sections from Strip set 1 and one section from strip set 3 Sew your blocks together with a 1/4 inch seam and press the the seams away from the centre on both blocks Block 1 and Block 2 Using a rotary cutter and ruler cut vertically on the solid red line through the centre of both of these blocks. Depending on your own seam allowance the 1 3/4 inch mark should fall on the seam line. Cut horizontally through the centre of both blocks by placing the 1 3/4 inch line on the seam line From the left block take the top left piece and turn 180 degrees and place back in the same space within the same block. Now take the bottom right piece of the same block, turn 180 degrees and put back in the same space within the same block. Repeat this same procedure in block 2. Flip the rows over right sides together and sew a 1/4 inch seam Open and press the seams in opposite directions so that the seams nest together for the final seam You will have two 10 inch blocks like this. I set my quilt 6 x 5 blocks (30 blocks), 15 of block 1 and 15 of block 2 set alternately with additional borders.