A machining tool may include an elongated body forming a duct therewithin, the duct extending from a proximal inlet at a proximal end of the body to a distal portion of the body having a first lateral opening. The tool may also include a plunger movable between a proximal first position and a distal second position along the duct. The tool may also include a resilient element to press the plunger towards the proximal inlet, and a pivotally deployable blade rotatable between a deployed state, when the plunger is in the first position, and a retracted state, when the plunger is in the second position, wherein the blade is deployable from the first lateral opening.