Dr Dave says the COR for phenolic is .87, and for a medium leather tip is .73. We know that the durometer shows a lot of medium tips measure around 75 hardness, hard tips around 80-85, and phenolic is 99. Based on that, we could make an educated guess that if medium is .73, and phenolic is .87, then soft is probably around .65, and hard is .76-.79. Just spin the thing until you get all of the pieces of the old tip off, then put some contract cement over tip of both the tip and the ferrule and then hold it on with the rubber band thing. I have a snooker cue so the tip presser doesn't stay on it. A thick rubber band and tape works just as well. Then viola, your done. To wit, phenolic tip vs mushy tip. Or possibly, the control a shooter programmed into the stroke "long" before the moment of impact. Here's the physical experiment: Set up a robot (or spring) with accurate ball placement and control The tip for the experiment shall be a common leather cue tip. Soft would favor my argument but even a "hard 2. BOING - This is the latest jump cue tip. We take a solid leather tip and hollow out the middle. We insert a spring (tension defined by customer) and fill the tip up with the residue we created. This bad boy can bounce a ball. In a pinch, one can also use this as a pogo stick to get out of a bad situation. 3. Grabby - The first Masse tip ever I currently have a phenolic tip on my breaking cue. I was wondering what exactly the procedure was if I wanted to change to a different tip. I've… Phenolic tips can put little smiley face cracks all over a cue ball, so I'm no longer looking at break cues with phenolic tips--rather I'm looking at break cues with hard leather tips, like a Samsara J/B tip. You might want to throw the Billiard Warehouse J/B cue into the mix ($159): S8Ru.

phenolic tip vs leather tip