I'm Gonna Get Flamed For This..... Taper Roll, Is When The Shaft Is Straight, But Has Been Finish Tapered By Hand, Or Hand Tapered Through The Years Of Cleaning/sanding. The Shaft Will Spin True In A Lathe, But Because Of Different Pressures At Different Points On The Shaft During Hand Sanding, There Are High/low Spots That Can Be Seen When The Shaft Is Rolled On The Table. But When The Shaft Is Rolled Elevated On The Roll, The Tip Doesn't Move, And When Spun In A Lathe It Is Straight.
Just Because The Light Under A Shaft Varies A Little, Doesn't Mean The Shaft Isn't Straight.
For Example..... A Cuemaker Finishes A "perfect" Shaft, A Player Choose To "clean" The Shaft With Fine Sandpaper, But Applies More Pressure To One Side Of The Shaft, Than He Does To The Other. Causing A Low Spot. If You Were To Roll It On A Table, The Light Under It Would Vary, But If Spun In A Lathe The Tip Still Wouldn't Wobble, Hence The Shaft Is Straight, But Shows A Taper Variance. This Taper Variance Is What I Call Taper Roll. I Would Say Taper Variance But Most People Would Just Look At Me All Confused.
To Me That Is The Proper Way To Use The Term "taper Roll", Although I Have Seen It Used By Unscrupulous Charachters To Describe A Warped Cue.
