Ruler trims to 3/4 finished on one side and 1 1/2 finished strips on the opposite side. To make 3/4 finished logs, cut oversized strips 1 1/2 wide. To make 1 1/2 finished logs, cut strips 2 1/4 wide. Cut center square any size you wish or make a block as the center. Its incredibly simplejust sew, lock on & trim!