If your cutter is not cutting even on layer of fabric I'm guessing that it's because you're not putting enough pressure on it...you do have to push down hard enough for the razor edge to get thru...when you are used to doing it, you'll be able to hear the difference between the razor cutting the fabric and when it's not cutting. also, try a brand new blade, and make sure the blade is extended as far as it can, you may be preventing the blade from cutting by not having it fully extended.