Hi ,i just need some help please, im just fitting a new kitchen in my house and i cant decide what worktops to go for,i`ve seen some i like on the screw fix website but there granite,im just wondering how easy they are to cut?? . I guess i can use a angle grinder with a diamond cutting disc but im looking to fit a round sink and round drainer but not sure how to go about cutting those out ,is there anyway i can use a router?? ,the worktops are 12mm thick ,cheers