shaft bent or taper roll?

IMO, taper roll is another polite way of saying slight warp. A shaft is either straight or it isn't.
 
I agree with Ryan on this one. I had never even heard if the term Taper Roll until about 2 years ago and to me its just a nice way to say that the shaft has a slight warp or it just does not rool perfectaly straight. And just to let you know by your video I could not tell or see any kind of warp or bad roll in the shaft of the cue in question..
 
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The video doesn't show the shaft much, so I can't tell. However, try turning the cue around with the butt on the slate & the shaft hanging over the rail. Lay it on the rail with about 3" of the joint end of the butt & all of the shaft hanging over, then roll it & watch for wobble at the tip end. That will tell you many things, especially if the facing is off. Facing is often times the culprit behind many warpage claims.

To see if the shaft is warped, roll only the shaft on the table slate & watch for light variances under it as it rolls. You'll see everything. A slight warp or taper roll IMO would be less than 1/16" variance. More than that & you have notable warpage.

In my mind, I always thought of taper roll as a couple things besides warpage. The joint end of the shaft not being cut dead center but flushed up to the butt joint will cause variations while rolling but it might be dead nuts straight. A compound taper on the butt will often time cause a wobble in the shaft end when rolled on the table but when rolled on the rail it is dead nuts. These things I consider taper rolls. Warpage is when the shaft is actually bowed, as been said. I guess it all depends on who's looking at it & from what perspective.

In the end, if the cue has very little wobble, it's not bad. It's still perfectly playable. Severe is obvious notability in wobble. It may still play fine but nobody likes a warped cue. It's all perspective thing. How much warpage becomes annoying to you? Personally, I have yet to see a perfect, dead nuts straight cue period.
 
Looks a camcorder jitter to me.
Jeesh.
It appears to me the weight bolt or adjoining bolt is not centered and is causing the wobble but who know the way the cue was being rolled fast.
 
The video and the way it's being rolled is too poor for me to see a wobble in the but or shaft. Something I did pick up on is, at about the 25 second mark and again at the end, it looks to me like the cue is reversing its roll and returning to a low point. If the shaft is that badly warped maybe the videographer is purposely rolling it that way, that fast, leaving the tip out of the frame and using the jittery camera method to film it all on purpose.
 
IMO, taper roll is another polite way of saying slight warp. A shaft is either straight or it isn't.

There are only four things that could cause a cue to not roll straight;

1. Shaft is not straight or is off the center line.
2. Butt is not straight or is off center line.
3. Face. Whether it be shaft, butt, or both.
4. The actual joint connection. ei; pin bent, not concentric, etc.
 
There are only four things that could cause a cue to not roll straight;

1. Shaft is not straight or is off the center line.
2. Butt is not straight or is off center line.
3. Face. Whether it be shaft, butt, or both.
4. The actual joint connection. ei; pin bent, not concentric, etc.

Swelling on one side of the shaft can make the shaft roll funny.
Sand blocking the joint collar.
 
There are only four things that could cause a cue to not roll straight;

1. Shaft is not straight or is off the center line.
2. Butt is not straight or is off center line.
3. Face. Whether it be shaft, butt, or both.
4. The actual joint connection. ei; pin bent, not concentric, etc.

Add, off center weight bolt. rolls straight only when rolled very slowly,and will not sit in any place.ie wants to roll left or right till weight is at bottom.
 
One of the best ways to tell if a cue is actually straight is the old school simple method of sighting down the cue like a rifle. Hold it up to your eye and get a nice dark background and spin the cue slowly. You'll be able to tell exactly whats going on. When I sight a cue in that manner and its absolutely perfect then sure enough I can chuck the cue up in my lathe with the shaft attached to the butt & spin it wide open....it'll look like the cue isn't even spinning its so straight.:wink:
 
Roll the shaft by it self. If the amount of light/space under the shaft changes drastically it is warped. If the amount of light/space under the shaft stays the same it is straight. Taper roll is usually a misused term.
 
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