How do you know the Cuetec Avid tip end is hollow?
A three-year old Reddit discussion is the
only mention I can find on that subject:
The first thing I noticed oddly enough is that this shaft has a different resonance than a standard maple shaft. The fiberglass bonding lets them maintain rigidity in the shaft while boring 10 inches into the underlying maple to reduce front end mass. This means the first ten inches from the tip of the sight plate is essentially hollow. If you have any friction when stroking the cue, it gives you a slight amount of vibration - almost like drawing a bow across the strings of a violin. You can also feel it if you kind of tap the shaft with your fingernail up and down the length of the shaft. I was concerned how this would feel when striking the cue ball.
Turns out I had nothing to worry about. When attached to the butt this resonance dissipates and you are left with a very smooth and solid feel when you strike a ball. I noticed a huge difference especially when shooting over a ball or against the rail. These were the shots as an amateur that I could feel the largest difference between my old maple shaft and the AVID shaft. I used to feel like I was fighting the deflection on my old cue, while this one required almost zero effort to stroke through the point of contact on these types of shots.