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Why Does My Pottery Collapse on the Wheel?
Oct
If your pottery keeps collapsing while you’re throwing it on the wheel, the most common causes are too much water, walls that have become too thin, uneven pressure, poor centering, or trying to make the pot taller than the clay can support.
Collapsing is extremely common when you’re learning to throw. It doesn’t necessarily mean you’re doing something completely wrong. Often, one small change in your technique can make the clay much easier to control.
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1. You’re Using Too Much Water
One of the biggest causes of collapsing pottery is excess water.
Water helps your hands move smoothly over the clay, but too much can gradually soften the clay. As the walls become wetter and weaker, they may stop supporting themselves.
This is especially likely if you’re throwing for a long time and repeatedly adding water.
What to do
Use only enough water to keep your hands moving comfortably. If the clay starts feeling extremely soft or slippery, stop adding water and remove excess moisture from the inside of the pot when appropriate.
2. Your Walls Are Too Thin
There is a limit to how thin a clay wall can become before it loses its ability to support itself.
Beginners often try to make their walls very thin because thin pottery can look more refined. But removing too much clay too quickly can make the walls unstable.
If your pot starts leaning, rippling, or collapsing after several pulls, you may simply have taken the walls too thin.
What to do
Focus on creating even walls before trying to make them extremely thin.
Consistency is more important than thinness when you’re learning.
3. You’re Applying Uneven Pressure
Your hands work together to control the clay.
If one hand pushes significantly harder than the other, part of the wall can become thinner or move outward while another area remains thick.
Eventually, the weaker section may buckle.
What to do
Use controlled, consistent pressure and move your hands gradually around the form.
Try not to squeeze one section aggressively while rushing through another.
4. Your Clay Isn’t Properly Centered
Poor centering can make everything that comes afterward more difficult.
An off-center lump doesn’t rotate evenly, which can result in walls with inconsistent thickness. As you pull the walls upward, the uneven sections can become increasingly unstable.
Before opening the clay, make sure you’ve centered it as well as you reasonably can.
If the clay is wobbling significantly, fix the centering first rather than trying to compensate for it later.
5. You’re Pulling the Walls Too Quickly
Wall pulling takes control.
If you move your hands upward too quickly or remove too much clay during one pull, the walls can become uneven and unstable.
You don’t need to make the pot tall in just a few pulls.
Use gradual pulls and check the shape between them.
6. You’re Trying to Make the Pot Too Tall
Every clay form has practical limits.
A short, wide cylinder may be relatively stable, while a tall narrow form becomes increasingly difficult to support.
As you pull the walls higher, the clay becomes more vulnerable to leaning and collapsing.
If you’re still learning, practice with smaller, simpler forms before attempting tall vessels.
7. Your Clay Is Too Soft
Clay that is excessively soft can struggle to support itself even when your technique is reasonable.
This can happen because:
- The clay was already very wet
- You added too much water
- You spent too long throwing
- The clay body is naturally very soft
- The walls became saturated during throwing
If the clay has become noticeably weaker during the session, continuing to pull may make the problem worse.
Sometimes the best solution is to stop and work with firmer clay.
8. Your Wheel Speed May Be Too Fast
A wheel that’s spinning faster than you can comfortably control can make it easier to apply inconsistent pressure.
This is especially noticeable when pulling walls or shaping a form.
You don’t need to use the same speed for every stage of throwing.
If you feel like the clay is moving faster than your hands can control, slow the wheel down slightly.
9. You’re Supporting the Clay Poorly
Your hand position matters.
When pulling a wall, your hands should work together rather than pushing the clay randomly from different directions.
If your outside hand isn’t providing enough support while your inside hand applies pressure, the wall can be pushed outward and lose its shape.
Think about supporting the wall as you thin and raise it.
10. You’re Trying to Fix the Shape Too Aggressively
Once a pot begins leaning, it’s tempting to push it hard in the opposite direction.
That can make the situation worse.
Large corrections can suddenly move a significant amount of clay and destabilize the wall.
Instead, make smaller adjustments while the wheel is rotating.
If the form is already badly collapsed, restarting may be easier than trying to rescue it.
What Should You Do When Your Pot Starts Collapsing?
The first thing to do is stop pulling.
Don’t keep adding pressure and hoping the wall will recover.
Instead:
- Slow or stop the wheel.
- Look at where the collapse started.
- Check whether the wall is extremely thin.
- Check whether the clay is overly wet.
- Remove excess water if necessary.
- If the form is still stable, make gentle corrections.
- If it has completely collapsed, recycle the clay if appropriate and start again.
Trying to rescue a badly collapsed form can sometimes teach you more than immediately throwing it away, but don’t feel obligated to save every piece.
Why Does My Pot Collapse at the Top?
If the top of your pot repeatedly falls outward, you may be pulling the upper section too thin or applying too much outward pressure.
The rim is particularly vulnerable because it has less material supporting it.
Try leaving slightly more thickness at the rim and use gentler pressure when finishing the top.
Why Does My Pot Collapse in the Middle?
A collapse in the middle can indicate that the wall has become too thin or that pressure has been uneven during your pulls.
Look at the thickness of the wall before continuing upward.
If one section feels noticeably thinner than the rest, concentrate on making your next pull more even rather than immediately trying to make the entire vessel thinner.
Why Does My Pot Collapse After I Add Height?
This is often a sign that the lower section has become too thin or too wet to support the additional height.
As the vessel gets taller, the upper walls put more demands on the lower part of the form.
Instead of repeatedly pulling upward, learn to control the thickness and shape of the lower section before building more height.
How Can You Prevent Pottery From Collapsing?
The simplest prevention strategy is to focus on control rather than speed.
Before each pull:
- Make sure the clay is reasonably centered.
- Use enough water, but not excessive amounts.
- Keep your pressure consistent.
- Support the wall with both hands.
- Avoid removing too much clay at once.
- Don’t rush to make the vessel tall.
- Pay attention to wall thickness.
- Slow the wheel if you are losing control.
These habits become much more natural with practice.
Should Beginners Practice With Smaller Pots?
Yes.
Smaller forms are often easier to control because you’re working with less height and can concentrate on developing consistent hand pressure.
Once you can reliably center, open, pull, and shape smaller forms, gradually experiment with taller or more complex pieces.
You don’t have to start by making a large vase.
When Should You Stop Trying to Save a Collapsed Pot?
If the walls have completely fallen over, the clay has become extremely soft, or the form is too distorted to work safely, starting over may be the better option.
Recycling suitable clay isn’t failure. Reusing clay is a normal part of pottery.
Every failed form can also show you exactly what your technique needs to improve.
Related Pottery Guides
If you’re learning to throw, these articles cover some of the skills connected to collapsing pottery:
- How Do You Center Clay on a Pottery Wheel?
- How Fast Should a Pottery Wheel Spin?
- Why Does My Clay Keep Flying Off the Pottery Wheel?
- What Is Wedging Clay and Why Do Potters Do It?
- Pottery for Beginners: A Complete Guide From Clay to Finished Piece
Frequently Asked Questions
Why does my clay collapse when I pull it up?
The walls may be too thin, too wet, or receiving uneven pressure. Pulling too quickly or trying to make the vessel too tall can also contribute.
Can too much water make pottery collapse?
Yes. Excess water can soften the clay and reduce the strength of the walls during throwing.
Why does my pottery keep falling to one side?
Poor centering, uneven wall thickness, and uneven pressure can all cause a pot to lean. Check your centering before beginning your next pull.
Should I use less water when throwing pottery?
Use enough water to keep your hands moving smoothly, but avoid continuously soaking the clay. Excess water can weaken the form.
Is it normal for beginners to collapse pots?
Absolutely. Collapsing, cracking, wobbling, and other failed forms are common parts of learning wheel throwing.
Final Takeaway
When pottery collapses on the wheel, the solution is usually not to push harder or work faster. Focus on centered clay, controlled pressure, reasonable wall thickness, and careful water use.
Most importantly, don’t rush the height of the pot. Build the form gradually and learn to recognize when the clay is becoming too thin or too soft.
With practice, you’ll start feeling when the clay is stable—and when it is telling you to stop.
