semi-recessed

Hi, I'm about to fit semi recessed basin into the worktop and we've decided we would like to have small overhang above the units (30mm to base unit = 18mm door + 12 mm overhang). So before I will do cutting I just wanted to doublecheck if my approach is right, as I only have one chance to cut it...

Hi all, Apologies if this is being posted under the wrong section. Couldn't decide whether it would be joinery or plumbing but have opted for this one. Anyway, I'm in the process of changing the sanitary ware in my bathroom. As part of the change I want to add a wall to wall vanity unit...