You can find a quarter inch just fine in 1 of 2 ways: place your needle on a 1/4" line on your ruler and lay a piece of tape parallel to the ruler. Remove the ruler and build up the tape to form a dam to guide your fabric along; or place a square of 1/4" graph paper on your machine bed. Sink your needle in 1 junction(a quarter of an inch from the needle and either use tape or a whole pack of post-it notes to make a dam to guide the fabric along the edge. Hope this helps.