It’s not really a “cheese grater” but that’s become the company nickname for this tool. It’s really called a Surform Shaver 21-115 by Stanley.
This is a quick and easy way to shape edges of PlasDECK, and it’s often used to create a sloped edge around the perimeter of the decking to allow for a gradual transition from the PlasDECK down to the surface of the boat itself.
The PlasDECK cutting shears are used to quickly and effortlessly cut the PlasDECK to length during installation. These are designed to be used on this type of material, and they include a built-in gauge for cutting precise angles.
This is the knife the Pros use! This is most often use when creating caulk lines between borders and the rest of the deck. The flexible, wide, rounded edge is perfect for trimming dry caulk without damaging your deck.