Fresh razor blades are a much, I think I switched razor blades like 14 times when i was turfing. And I would get two sheets, that was you can cut your pieces a little bigger, you have to trim a little more when its on, but you can snug it up better and not worry about screwing it up. The hardest part is cutting the bottom mat, i spent forever on a template for the bottom on mine. I cant even remember how we did Aarons, but his came out pretty good too. But definately razor blades, lots of DAP weldwood.....and a well vented area with a bathroom close by.