Cuedog said:
Can you detect a warp in a cue by just putting it together and sighting down it? In other words... can you take a cue in your hands and place it in front of your eye(s) and tell if it is warped or not?
Here's how you can tell. Assemble the cue and sight down it, slowly turning it, keeping the tip end in sight like a gun barrel. You will see if the shaft the forearm or the joint is even the slightest bit off. You will not see if the handle or butt sleeve is warped.
However, you cannot necessarily tell if it's the shaft, forearm, or the joint. Joints can sometimes be re-surfaced to square with the cue. Sometimes pins get bent over, etc.
Here's a good technique to quickly check straightness and soundness of a cue:
Straightness:
1) Assemble the cue, gunsight down it and turn it. If the cue sights warped, determine what is warped with the following additional checks.
2) get to eye level and place the shaft of the cue on a flat surface and slowly turn it. If the gap between the shaft and the surface remains constant, the shaft is straight (and round).
3) repeat with the handle. If there is a gap, check the same way. If there is no gap, look for lifting of the joint or butt off the surface. Any lifting and falling will be evidence of warpage.
If the cue's parts are straight, but the cue sights warped, chances are the joint needs to be trued. The way I check for this is to lightly screw the cue together until the joint lightly touches but sights straight. If you can turn it and it stays straight, but sights warped when tight, then the surfaces need to be squared.
Soundness:
Take the cue apart and let each end of the shaft and butt tap lightly and freely against the table. If there are any loose parts or broken pieces internally, loose or broken ferrules or tenons, you will hear it.
Chris