Charms are removed.

If necessary, with a hacksaw, the excess length of the highway is cut strictly at right angles, but the required supply of 15 mm of the free ends of the pipes should still remain. The edges are sharpened to a smooth state with a file in order to avoid the formation of a burr — sources of accumulation of dirt and deposits during operation. Charms are removed. The branches are immediately oriented in the right direction: they should approach a specific plumbing device.