Can one cut a 15mm copper pipe with a hacksaw, or does one need to get a proper pipe cutter to get the rounded finish and thus ensure water does not piss everywhere? If it needs a pipe cutter, does anyone know if the Focus/B&Q will do this for me? I have two pipes that need cutting and don't really want to spend £15 on a pipe cutter for just one job. Alternatively, anyone in Oxfordshire happen to have a pipe cutter I can use? :)