A modest, controlled return is a better first demonstration than a dramatic attempt at full-table draw. The setup and target zone make the result repeatable.
Illustrative setup. Real-table repeatability has not been tested. Treat this as a practice candidate.
Learn the movement.
Use the short draw setup and pick a broad return zone. The display is the controlled return, not how far you can make the cue ball flee. Repeat the same starting positions and record each result.
This is a demonstration candidate. Its exact real-table repeatability has not been measured here. Test it during practice before offering an audience a guaranteed performance. Preparation tends to look remarkably like talent from the other end of the room.
Try it
One useful set.
Setup & action
Use the draw lesson with a short pot and generous return zone.
What to watch
Score successful controlled returns, not the single longest one.
Practice format
10 attempts is a starting suggestion. Record the pattern, not just the best one.
Counting one dramatic success as evidence of a reliable recipe.
Change one thing
Record a whole set, including the ordinary misses.
What changes the result?
Distance, pace, contact point, spin at collision, balls, cloth, and execution can all matter. Keep the basic setup consistent before comparing one change. An exact-looking line is not evidence of an exact physical prediction.
Keep something useful
A note to yourself.
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Keep your own score.
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Change the cue line, tip contact, elevation, and stroke strength. The motion is recalculated.
Candidate · nominal model
Cue ball below the 1 on a straight line to the far middle pocket. Start with the prepared low contact and modest cue speed.
Still setup. The 3D study adds the cue, alignment lines, spin, contacts, and playback.
3D is unavailable here. The setup, lesson, and text explanations remain available.
Dashed white: cue aim. Muted dashed: prepared line. Solid white: cue-ball track; gold/red: object balls. Wire sphere: cue-ball position at modeled ball contact. Contact angles are measured from the line of centers or cushion normal.
Ready. Playback starts only when requested.
Launch speed —Tip impulse —Cue-ball speed —Spin at this frame —
Cue speed changes impulse, spin, and travel. Playback speed only changes how fast you watch. The rendered fore-end shows the cue’s alignment and contact height.
Model & cue-specific calibration
Positive is counterclockwise in the overhead table view. Start at 0° unless you have a measured value for this cue and contact. Squirt is cue-specific; no universal degrees-per-tip value is assumed.
Nominal 2.54 × 1.27 m cloth, 57.15 mm balls; cue/ball masses 0.54/0.17 kg. Sliding/rolling friction 0.20/0.01, ball restitution 0.95, cushion restitution 0.78. Cushion friction 0.18 is a provisional model setting. Cloth, ball cleanliness, cushion rubber, and pockets vary.
Solid-sphere impulse, cloth slip/roll, ball friction, and a raised cushion nose are modeled. Balls stay on the cloth; jump, full massé, pocket jaws, cushion compression, and cue-shaft flexibility are not simulated. Strength is not a measured force in newtons.
Look for remaining backspin at the full hit, an object-ball pot, and a controlled cue-ball return. Excess pace can scratch; an early loss of backspin can produce follow.
Prepared for the nominal model. This trick layout has not been physically validated; changing the inputs can produce a miss or scratch.