Few things are more annoying in ping pong than a dented ball in the middle of a game (overcoaching spectators anyone?)

If you’re looking for a quick fix with not a ton of equipment laying around, you’ve come to the right place.

Here are 4 super simple ways to fix your ping pong balls and get back to winning.

Got your own strategy to add? Let us know and we’ll add it to the list!

The Hot Water Technique

The hot water technique is the most common and widely-used method for fixing a dented ping pong ball. It involves using boiling water and a spoon to increase the air pressure inside the ball and restore its original shape.

Although this method may not return the ball to its perfect condition, it’s usually enough for casual games and practice sessions.

Preparing the Equipment

Before starting, gather the necessary items for the hot water method. You’ll need a kettle or pot for boiling water, rubber gloves to protect your hands, and a spoon or plunger for the actual dent extraction. Make sure to fill the kettle with cold water and avoid overfilling.

Once you have all the equipment ready, you’re all set to undent that ping pong ball and get back to playing!

Steps to Undent the Ball

Begin by boiling at least three cups of water. Submerge the ball in a cup of boiling water using a spoon, ensuring it is completely submerged. The heat will cause the air inside the ball to expand, pushing the dent out.

After the process, place the ball on a flat surface, avoiding plastic surfaces, to let the ball cool down. Use a spoon or tongs to remove the ball from the hot water, unless you fancy 3rd degree burns.

Cautions and Tips

The obvious issue here is that boiling water can hurt you pretty bad. Make sure to wear something to protect yourself from any splashes and be cautious in general.

Take your time and let the ball cool down fully on a non-plastic surface to prevent melting or warping. I usually throw it on a towel.

The Hairdryer Approach

restore a dented ping pong ball
Another effective method for undenting a ping pong ball is the hairdryer approach.

This technique requires a hairdryer, towel, and tongs (or chopsticks in a pinch, ask me how I know) to heat up the ball and pop out the dent. Though not as popular as the hot water technique, the hairdryer approach can produce similar results, restoring the ball’s shape and making it playable once again.

Required Equipment

To prepare for the hairdryer approach, gather the necessary equipment: a hairdryer, a towel, and long, heat-resistant tongs. Wearing gloves may be a good idea depending on how hot your dryer gets.

Once you have all the equipment ready, you’re set to bring your ball back to life.

Process to Restore the Ball

To begin, hold the ball in a towel or your hand opposite the hairdryer. Activate the hairdryer on the heat setting and direct it towards the ball, maintaining a distance of approximately 6-8 inches away. You can start it on a lower setting and then move up the head as needed to prevent any unnecessary damage/wear on the ball.

The heat from the hair dryer will cause the air inside the ball to expand, pushing the dent out and restoring the ball’s shape.

After the dent is fixed, allow the ball to cool before using it again or you’ll just end up warping it.

Safety Measures and Advice

Safety first kids, although you’ve probably used a hair dryer before, adhere to the manufacturer’s instructions for operating the hairdryer and take breaks if your hand begins to feel hot. Use a thicker towel if necessary to protect your hand from the heat.

The Lighter Method

The lighter method is the riskiest of all techniques. This method involves holding the ball over a lighter flame to heat and expand the air inside the ball, pushing the dent out.
Due to its unreliability (high chance of ruining the ball completely) and potential danger, the lighter method should only be considered as a last resort when all other methods have failed or you don’t have access to any other equipment.

Required Items

To perform the lighter method, position yourself in a well-ventilated area and gather a lighter, tweezers, and a heat-resistant surface. Ensure that you have all the required items and wear protective gear, such as gloves and safety glasses (ok, maybe a bit overkill but be careful), before proceeding with this technique.

Procedure for Ball Restoration

Hold the ball over the lighter flame, being careful not to burn it. The heat from the flame will cause the air inside the ball to expand, pushing out the dent and restoring the ball’s shape. Same concept, different tools.

After the dent is fixed, allow the ball to cool on a heat-resistant surface before using it again.

Warnings and Recommendations

When using the lighter method, exercise extreme caution and follow all safety precautions, such as wearing protective gear and ensuring proper ventilation. Due to the risks associated with this method, it is recommended to try other techniques first, such as the hot water or hairdryer methods, before resorting to the lighter method.

Remember, safety should always be your #1 priority.

The Thumb Press Technique

The thumb press technique is another option, although it should only be used as a last resort. This method involves pushing the dent with your thumb, applying pressure around the indentation to restore the ball’s shape.
The main issue with the thumb method is that you’re likely to just make the ball worse instead of fixing it. But if you’ve got nothing else at hand, it may do the trick.

How to Apply Pressure

To apply pressure using the thumb press technique, gently press the area around the dent with your thumb, being careful not to apply too much pressure. Maintaining a slightly bent knuckle on the thumb can help reduce the amount of pressure applied, decreasing the likelihood of causing further damage to the ball.

Potential Issues and Solutions

The thumb press technique may cause further damage to the ball if used improperly, so use it with caution. In some cases, the dent may not return to its original position, and alternate methods such as the round stick technique or hot water technique may be used.

The Science Behind Ping Pong Ball Restoration

The science behind fixing a dented ball boils down to simple physics: heat expands air particles, which in turn fixes the dent. By understanding the relationship between pressure, volume, and temperature, we can use a bunch of different methods to restore the shape of the ball.

Understanding Air Pressure

The fundamental concept behind repairing the ball is air pressure. Pressure multiplied by volume is directly proportional to temperature, as stated in the physics equation linking these variables.

This equation helps us understand how alterations in air pressure, volume, and temperature can influence the shape of a ping pong ball and allows us to use heat to restore its shape.

Heat’s Impact on Air Pressure

Heat plays a crucial role in the restoration process. When air molecules are heated, they move faster and spread out, resulting in an increase in air pressure. As the ping pong ball increases its internal air pressure, the ball expands, helping to restore its original shape.

By heating the air inside the ball, the pressure inside increases, pushing against the dent and restoring the ball’s original shape.

Factors Affecting Success

Several factors can affect the success of restoring your ball, such as the size of the dent, the material of the ball, and the amount of heat applied. Smaller dents may be easier to fix, while larger ones may require more heat or even replacement of the ball.

The material of the ball, typically celluloid or plastic, can also influence the success of the repair. By considering these factors and understanding the science behind the process, you’re better equipped to restore your ping pong ball to its original shape.

When to Replace Your Ping Pong Ball

At times, despite our best efforts to fix a ball, it may be necessary to replace it with a new one. Knowing when to replace your pong balls is crucial, as playing with a damaged ball will seriously impact your game and may affect how you train.

In this section, we’ll discuss how to identify unfixable damage and the importance of ball quality in the repair process.

Identifying Unfixable Damage

To determine whether a ping pong ball is beyond repair, carefully inspect it for any dents, cracks, or warping. If the ball displays a crack or deep dent that cannot be fixed using the methods outlined in this guide, it’s probably time to get a new pack.

The Importance of Ball Quality

Buying good quality ping pong balls is the first step for successful repairs and an enjoyable gaming experience. High-quality balls offer a more consistent bounce, spin, and speed, which massively impacts the game. Opt for a 3-star ball, approved for official matches, to ensure you get a ball with reliable performance.

Tips for Ball Maintenance

Proper maintenance of your ping pong balls can prolong their lifespan and keep them in optimal condition. Store your balls in a cool, dry place away from direct sunlight (good advice in general!)

Clean them regularly with soap and water, avoiding the use of chemicals and excessive water. By following these tips, you can maintain the quality and longevity of your ping pong balls.


In conclusion, fixing a dented ping pong ball is possible with a variety of methods, from the popular hot water technique to the riskier lighter method.

By understanding the science behind air pressure and heat, you can restore your ball’s shape and get back to enjoying the game. However, it is essential to recognize when a ball is beyond repair and invest in high-quality ping pong balls for the best gaming experience.

So, the next time you find a dented ball, remember these tips and techniques to bring it back to life and keep your game on point!

If you’re just getting started with the sport, check out our guide to the best ping pong paddles as well as the ultimate guide to the best ping pong tables. This might save you a bunch of money assuming you’ve not already made the investments.

Frequently Asked Questions

How do you fix a dent in a ping pong ball with water?

To fix a dent in a ping pong ball, fill a bowl with hot water and submerge the ball for several minutes until the heat from the water helps to return it to its original shape.

This is a simple and effective way to restore a dented ping pong ball. The heat from the water helps to soften the material and reshape it back to its original form.

Why can a dented ping pong ball sometimes be repaired by heating it?

Heating a dented ping pong ball causes the gas inside to expand, which creates pressure on the dent and pushes it out. By using a pot of hot water, or any other safe heat source, you can increase the pressure and temperature to restore the shape of the ping pong ball.

What can be done to return a dented ping pong ball to its original shape?

Using a steam iron is a reliable way to fix dented ping pong balls. Heat up the steam iron and press the ball against the soleplate with an adequate amount of pressure until the ball regains its original shape.

The most effective way to restore a dented ping pong ball is to use a hairdryer on medium heat. Gently heat up the dented area and slowly reshape it as you go until it returns to its original spherical shape.