I would think it allows you to top stitch a 1/4" without any problem. Sometimes it depends on the type of fabric you are using. A lot of purses and bags are top stitched to accent them, or if using a contrasting thread, maybe silk, it would be beautiful. Of course, your pattern says to trim down, but if your fabric unravels easily, I would suggest overcasting it or serging it. Good luck with it.