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Bricole Practice: Separate Geometry, Spin and Contact Order

Build a cushion-first comparison from real layouts. Use reflection as a starting approximation, isolate spin and speed, and diagnose the first event that goes wrong.

Author: Setviva Engineering 502 words 3 min read

A bricole reaches a cushion before the first object ball. Its value is the approach it creates, not a promised professional success rate. Compare it with a ball-first option when the position allows both.

Define the first leg

Choose the first object ball and intended contact thickness. A line to the object-ball centre is not the same as the cue-ball centre line needed for a cut. Plan that contact before choosing the rest of the cushions.

For an initial geometric sketch, reflect the intended cue-ball centre target across the cushion-contact line and connect that reflected point to the starting centre. The intersection gives an ideal reflection reference. This assumes equal incoming and outgoing angles; real cushion deformation, spin and speed can change the rebound.

Account for the ball radius

The ball centre cannot reach the physical cushion nose. On the 2.84 × 1.42 m reference table with radius 0.0307 m, a simple centre-line model places upper-cushion contact at y = 1.3893 m. Use the same coordinate convention for starting point, reflected target and contact.

This correction describes a geometric boundary, not a universal real-table aiming adjustment. Do not add half a ball-width whenever a ball is near a rail. If the cue ball is touching a cushion, UMB Article 27.2 also restricts playing directly into that cushion.

Compare one effect at a time

A practice record, not a deadline

Choose a manageable number of attempts and record every one. Repeat under comparable conditions in another session before deciding that a setting is more dependable. There is no verified 21-day mastery timetable or universal one-tip/two-tip recipe here.

A three-cushion point requires both object balls and at least three cushion contacts before the second object ball. The cards below open exact starting layouts, not solved trajectories. A simulator comparison helps inspect a model; use real-table observations to evaluate your own stroke.

Three starting layouts for separate questions

Long-cushion approach, short-cushion choice and side-spin comparison. Coordinates describe the actual app layouts; white is the cue ball.

Check the legal cushion-first contact order →