Gel Pad So I came up with a good way to do it. Take one of those cheap knives that you get at the hardware store. I am talking about the ones with the break off blades. Measure the thickness of the gel pad. Mark that figure on the blade with tape. Cut the perimeter first then make a ton of cuts in two directions.. Never let the blade plunge deeper than the tape line. You will end up with all these little boxes that you simply pull off sideways and Wahla you have a nice uniform bed to lay the pad in.