known the pallet facilitates movement of the structure 11 within the machining center 10 the machine 18 performs the machining of the parts 24 that are held on the structure 11 depending upon the intended use many types of machines can be used including cnc machines and other robotic equipment as suggested above it is preferred that the machine uses a spindle to engage the coupling 50 on the fixture 12 and energizes the pump 40 by rotating the coupling generally it is contemplated that the pump will be energized at the outset of the machining operations but this may not always be necessary in some circumstances the pump may be actuated or further actuated between machining operations although the pump that is illustrated here is energized by rotating the coupling other arrangements may be possible for example in some circumstances the machine could use a linear motion to activate a piston or lever operated pump in the illustrated arrangement the machine 18 is also used to activate the pressure release valve 66 as with the automation of the pump operation the automation of the pressure release system may help to prevent operator errors as noted above in the illustrated arrangement the machine activates the pressure release valve after the machining operations have been completed by using the spindle 54 to press the button 68 on.