There is a very good reason I do as much as possibly myself at home. I refitted our bathroom better than the builders did it when they built our house. The tiles just fell off. We kept the bath and sink as we liked the colour (pale cream) but I needed a new loo bowl (that ruddy crack started a bathroom refurb). Turned the bath round 180 degrees, refitted it properly (the builders didn't adjust the legs properly), and replaced the electric shower, and put up some really good tiles - here is where an proper tile cutter is just the business.