SLIT WITH ONE BLOW

It would be good to have a set of different blades to the hose for irrigation, including end nozzle in the form of a slot: it has its advantages. And most importantly — this is easy to do from the existing tubular scraps. It is enough to insert one end of the tube a metal wedge and pound it in with a hammer: get the desired slit opening, the amount of which will depend on the thickness of the wedge.