 For example, it is most important, as far as possible, to ensure that copper tubes cut with a tube cutter are deburred before making the joint.Also a gap between the tube end and the stop in the fitting, due to the tube not having been cut to the correct length and fully inserted into the socket of the fitting, can also induce turbulence in the water stream.The rate of impingement attack on copper also depends to some extent on the temperature of the water.