I'm planning on buying a core drill to pass a 40mm waste pipe through our medium density block walls. Should I get a 40mm or 42mm drill core?
I can get hold of a 40mm one much cheaper than a 42mm for some reason but not sure if there would be enough play.
I can get hold of a 40mm one much cheaper than a 42mm for some reason but not sure if there would be enough play.