This block took me a good portion of TWO days to complete.... a few notes... I pressed the seams open... I DID use the template for the center block (it is not 3 ½" ) after trying unsuccessfully to use the 3 ½" square..... [ATTACH=CONFIG]444771[/ATTACH] and Hallelujah it does measure approx. 12 ½" square.... but a little squeegied