I haven't honed as many razors as some of these guys but for me if there is little to no hone wear I use 1 layer of tape but it the hone wear is a little more I use 2 layers of tape. the tape I use is 3M 88 witch is about 8.5 thousandths thick. I've heard of thicker tape but where I live the 88 is the best I can find. while i'm setting the bevel I watch the tape closely and if it wears I change it often. after the bevel is set then the tape doesn't wear that much for me. anyway that's the way I do it.