Product review (1 stars): ugly if you cut them by hand...
don't even think you can trim these down by hand and have them look good. if you have a mechanical paper cutter, you MAY produce decent results. cutting by hand? nope, don't even bother. threw mine away as soon as i saw how crooked the cuts looked when sitting on the stove. they may technically work fine, and unless they are a direct fit for your stove top, i would find a different product.