Why Is Chalk Used for Cue Sticks?

Chalk is applied lightly to the tip of a pool stick.

Chalk is one of those substances that has a thousand uses. Whether you're writing something on the wall or trying to improve your pool game, you'll probably want some chalk. The familiar blue-green cubes resting on most pool tables, however, are a little mystifying, especially for beginners who haven't yet mastered the game. As you become better at pool, you will increasingly rely on chalk, especially when pulling off more difficult shots.

Types

There are two types of chalk used in pool and billiards games. The most familiar is that used on cue tips, but the other type is just as important: powdered chalk is rubbed into the palms of players to improve their grip on the smooth wooden shaft of their cue. This second type of chalk is entirely optional. Use of tip chalk is highly recommended, at risk of losing the game; hand chalk is entirely up to the player's discretion.

Misconceptions

New pool or snooker players will often grind the chalk into the leather tip of the cue. This actually does the opposite of the intended purpose, smoothing the tip down. While professionals look like they are doing this, they're very lightly applying the chalk to the tip of the cue, because it makes the tip rougher. While this seems a little counter-intuitive, it is the correct use of chalk.

Function

The reason tip chalk is so useful is down to physics. When the tip of the cue hits the cue ball, there is a transfer of force: all the force from the cue shoots the ball off in the intended direction. While the rest of the motion needs to be fluid, the chalk is there to improve the friction at the tip, where the cue meets the ball. This friction means that more of the energy from the shot is transferred into the ball, and less energy is wasted by slipping or potentially miscueing altogether. This means chalk could be the difference between a spin shot and the cue glancing off the side of the ball.

Composition

The paper sleeve keeps players' hands clean while playing.

Chalk is made of crushed silica and combined with an abrasive substance. There are a number of different substances that can be used, and these depend on the company that makes the chalk--which is why you should find a good brand of chalk in your area and stick with it, as bad chalk can ruin your cue tip and possibly your game. This is mixed with a blue-green dye, and a light adhesive. These ingredients mixed together have air forced through them until they reach the right consistency. After that, a hydraulic press is used to squeeze the chalk into large bricks, which are then cut into the cubes. Each cube has a divot placed in it for the cue tip, and is placed in a paper holder, boxed and shipped out.

Maintenance

Tip chalk is used to roughen up the tip, but over time the tip of a cue can become smooth, and stop accepting as much chalk. Impact with the ball smooths the cue tip, which is why chalk is applied before every shot, but after many successive hits, the tip can become completely smooth, even looking glossy. During these times, you can use a few different tools to repair your tip, like a tapper or a tip pik. These devices are used to aerate, pick at, and generally beat up the tip of the cue, which in turn makes it take more chalk, to make it even rougher.

References

• Pool as Billiards: Why is Chalk used in Billiards?
• Twin City Billiards: Pool Cue Sticks
• Billiards Bars and Game Rooms: Buying Guide for Billiard Accessories