Thanks for all your comments.
It's been a while since I've posted an update. Been playing with my new toy, the cnc mill.
The black Tygon hose isn't as flexible as the normal transparant one. Needed something for tight bends and that's where the mill comes in.
These two parts can easily be removed. Just unscrew the three hex bolts.
And with the part in place.
A also made a part that will guide two hoses, that pass through a aluminium panel. Nice to practice milling a pocket. Made a pocket in an orange sheet of acrylic, two millimeters deep. The black acrylic fits into this pocket.