
Breaking a plastic piggy bank can be a necessary task if you need to access the savings inside without a removable plug. The most straightforward method involves using a sharp tool, such as a screwdriver or knife, to carefully pry open a seam or create a small hole in the plastic. Alternatively, you can place the piggy bank in a sealed plastic bag and gently tap it with a hammer to weaken the structure, making it easier to open. For a less destructive approach, submerging the piggy bank in hot water can soften the plastic, allowing you to cut or peel it open with minimal damage. Always exercise caution to avoid injury and consider the sentimental value of the piggy bank before proceeding.
| Characteristics | Values |
|---|---|
| Method 1: Dropping | Drop the piggy bank from a height onto a hard surface like concrete or tile. Wrap in a towel first to contain pieces. |
| Method 2: Hammer | Use a hammer to carefully tap along the seams or a weak point until it cracks open. |
| Method 3: Prying | Insert a flathead screwdriver or butter knife into the coin slot and gently pry until it opens. |
| Method 4: Heating | Apply heat from a hairdryer or heat gun to soften the plastic, then carefully pry or twist open. Caution: Avoid overheating to prevent melting or warping. |
| Method 5: Freezing | Freeze the piggy bank to make the plastic brittle, then drop or tap gently to break. |
| Safety Precautions | Wear safety goggles and gloves. Work on a protected surface. Keep children and pets away. |
| Alternative: Drill | Drill a small hole near the coin slot to access and remove coins without fully breaking the bank. |
| Considerations | Plastic type affects ease of breaking. Thicker plastic may require more force or heat. |
| Environmental Impact | Consider recycling the plastic pieces if possible. |
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What You'll Learn

Using a hammer and chisel
Breaking a plastic piggy bank using a hammer and chisel requires precision and care to avoid injury or unnecessary damage. Begin by placing the piggy bank on a stable, flat surface where it won't roll or shift during the process. A workbench or a sturdy table covered with a protective layer, like a cloth or cardboard, works well to prevent scratches or damage to the surface. Ensure you have enough space to maneuver the tools comfortably.
Next, inspect the piggy bank to identify the weakest point, typically the coin slot or a seam where the plastic is thinner. Position the chisel at this point, ensuring the blade is aligned with the area you intend to break. Hold the chisel firmly with one hand, keeping your fingers away from the striking end. With your other hand, grasp the hammer and aim for the top of the chisel. Start with light taps to create an initial crack, gradually increasing the force as needed. The goal is to avoid shattering the plastic into small, sharp pieces, which could be dangerous.
As you work, periodically assess the progress. Once a crack forms, reposition the chisel along the crack or at another weak point to continue breaking the piggy bank open. Be patient and methodical, as plastic can be unpredictable and may not break cleanly on the first attempt. If the chisel gets stuck, avoid twisting it, as this can cause the plastic to crack unpredictably or damage the tool. Instead, gently tap it loose and realign it before continuing.
Safety is paramount throughout the process. Wear safety goggles to protect your eyes from flying plastic shards. Additionally, consider wearing gloves to improve your grip on the tools and protect your hands from sharp edges. Keep children and pets away from the work area to prevent accidents. Once the piggy bank is open, carefully remove any coins or contents, and dispose of the broken plastic responsibly, ensuring no sharp pieces are left behind.
Finally, clean your tools after use to maintain their effectiveness for future projects. Wipe the chisel and hammer with a dry cloth to remove any plastic debris or dust. If necessary, use a mild solvent to clean stubborn residue, but ensure it’s safe for the tool materials. Proper maintenance ensures your tools remain in good condition and ready for the next task. With these steps, using a hammer and chisel to break a plastic piggy bank can be done safely and efficiently.
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Applying heat to weaken plastic
Applying heat to weaken the plastic of a piggy bank is a strategic method that leverages thermal expansion and material softening to make the plastic more susceptible to breaking. Start by identifying a heat source that can be controlled effectively, such as a hairdryer, heat gun, or even a pot of boiling water. The goal is to apply consistent heat to the plastic surface without melting it entirely. Focus the heat on the area where you intend to break the piggy bank, such as along a seam or a thinner section of the plastic. Hold the heat source a few inches away from the surface to avoid direct contact, which could cause uneven heating or damage.
When using a hairdryer or heat gun, set it to a medium or high heat setting and move it in a circular motion to distribute the heat evenly. This prevents overheating in one spot, which could lead to warping or discoloration. For boiling water, carefully pour it into a container and place the piggy bank into the water, ensuring the target area is submerged. Allow the plastic to absorb the heat for 2-3 minutes, or until it feels warm to the touch. The heat causes the plastic molecules to expand and become less rigid, making it easier to crack or break.
After applying heat, act quickly while the plastic is still warm and pliable. Use a tool like a hammer, screwdriver, or pliers to apply pressure to the heated area. Start with gentle taps or prying motions to test the plastic's resistance. If the plastic has softened sufficiently, you should notice it yielding more easily than before. Gradually increase the force until the plastic cracks or splits open. Be cautious not to apply too much force too quickly, as this could cause the plastic to shatter unpredictably.
For thicker or more durable plastic piggy banks, you may need to reapply heat multiple times to achieve the desired effect. Focus on the same area each time, allowing the plastic to cool slightly between heating sessions to avoid overheating. This incremental approach ensures that the plastic weakens progressively without compromising its structural integrity too quickly. Once the plastic is sufficiently weakened, a firm but controlled strike should be enough to break it open.
Safety is paramount when applying heat to plastic. Always work in a well-ventilated area to avoid inhaling fumes, and wear heat-resistant gloves to protect your hands. Keep a safe distance from the heat source and avoid touching the heated plastic directly. If using boiling water, handle it with care to prevent burns. By following these steps, you can effectively weaken the plastic of a piggy bank using heat, making it easier to access the contents inside.
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Drilling a small hole carefully
When it comes to breaking a plastic piggy bank, drilling a small hole carefully is a method that requires precision and patience. This approach is ideal if you want to minimize damage to the piggy bank and potentially preserve it for future use. To start, gather the necessary tools: a small drill bit (preferably 1/8 inch or smaller), a power drill or a handheld drill, and safety gear such as gloves and safety goggles. Ensure your workspace is clear and well-lit to avoid any accidents. The goal is to create a hole just large enough to access the coins inside without causing unnecessary harm to the structure of the piggy bank.
Begin by selecting the spot where you’ll drill the hole. Choose a location that is inconspicuous, such as the bottom or a less visible side of the piggy bank. Mark the spot with a small dot using a permanent marker to ensure accuracy. If the piggy bank has a flat surface, place it on a stable, non-slip surface to keep it steady during drilling. For curved surfaces, consider holding the piggy bank firmly in one hand while drilling with the other, though using a clamp or vice to secure it would be safer and more controlled. Always prioritize stability to prevent slipping, which could lead to accidents or uneven drilling.
Before drilling, test the drill bit on a piece of scrap plastic to ensure it’s sharp and suitable for the material. Plastic can be tricky to drill through, as it tends to melt or crack under too much heat or pressure. Set the drill to a low speed to reduce friction and heat buildup. Position the drill bit directly over the marked spot and apply gentle, steady pressure as you begin drilling. Avoid forcing the drill, as this can cause the plastic to crack or the bit to break. If the drill starts to feel hot, stop immediately and let it cool down before continuing.
As you drill, periodically stop to clear any plastic shavings or debris from the hole. This not only helps maintain a clean cut but also prevents the bit from clogging, which can lead to uneven drilling or damage to the piggy bank. Once you’ve drilled through the plastic, carefully remove the drill bit and inspect the hole. If needed, use a small file or sandpaper to smooth any rough edges around the hole. This step ensures that the hole is safe to touch and reduces the risk of injury when reaching inside to retrieve the coins.
After successfully drilling the hole, you can now access the contents of the piggy bank. Insert a slender tool, such as a butter knife or a thin stick, through the hole to gently push or scoop out the coins. Take your time to avoid scratching the interior of the piggy bank. Once all the coins are removed, consider whether you’d like to repair the hole for future use. A small hole can often be sealed with a plastic adhesive or covered with a decorative patch, allowing the piggy bank to be reused. Drilling a small hole carefully is a thoughtful and controlled method that balances the need to access the contents with the desire to preserve the piggy bank’s integrity.
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Freezing to make plastic brittle
Freezing is a clever and effective method to make plastic more brittle, which can significantly ease the process of breaking open a plastic piggy bank. The principle behind this technique is simple: plastic becomes more fragile at lower temperatures, making it easier to crack or shatter. To start, ensure your piggy bank is empty of any coins or valuables to avoid damage to the contents. Once confirmed, place the piggy bank in a sealed plastic bag to protect it from moisture, as direct contact with water can lead to frost or condensation, which might affect the plastic’s surface.
Next, transfer the bagged piggy bank into your freezer, ensuring it sits on a flat surface to prevent it from tipping over. The ideal freezing temperature is around 0°F (-18°C) or lower, which is the standard temperature of most household freezers. Leave the piggy bank in the freezer for at least 12 to 24 hours. The duration is crucial, as it allows the cold to penetrate the plastic thoroughly, making it uniformly brittle. Avoid rushing this step, as insufficient freezing time may result in the plastic not becoming fragile enough to break easily.
After the freezing period, carefully remove the piggy bank from the freezer, keeping it in the sealed bag to minimize temperature fluctuations. Quickly take it to the area where you plan to break it, as the plastic will start to warm up and regain its flexibility once exposed to room temperature. It’s essential to work swiftly during this stage to maximize the brittleness effect. Have your tools ready, such as a hammer or a heavy object, to apply force immediately after removing the piggy bank from the freezer.
When you’re ready to break the piggy bank, remove it from the bag and position it on a stable surface, preferably one that can withstand impact, like a concrete floor or a thick wooden board. Aim for a weak point on the piggy bank, such as the coin slot or a seam, as these areas are often thinner and more susceptible to cracking. Strike the plastic with a controlled, firm blow using your chosen tool. The frozen plastic should shatter or crack more easily than it would at room temperature, allowing you to access the contents inside.
Finally, clean up any plastic fragments carefully, as they can be sharp. Dispose of the broken pieces responsibly, considering recycling options if available in your area. Freezing is a non-destructive method compared to using heat or sharp tools, making it a safer and more controlled way to break a plastic piggy bank. However, always exercise caution when handling tools and broken materials to avoid injury.
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Cutting with a sharp utility knife
Breaking a plastic piggy bank with a sharp utility knife requires precision, care, and the right technique to avoid injury or damaging the contents inside. Begin by selecting a high-quality utility knife with a fresh, sharp blade. Dull blades can slip and cause accidents, so ensure the knife is in optimal condition. Lay the piggy bank on a stable, flat surface, preferably one that can withstand scratches, like a cutting mat or a piece of scrap wood. This provides a secure base and prevents the piggy bank from rolling or shifting during the cutting process.
Next, identify the weakest point on the piggy bank to make the cut. Typically, this is along a seam or where the plastic is thinnest. Hold the piggy bank firmly with one hand, ensuring your fingers are clear of the cutting path. With your other hand, carefully position the utility knife at the chosen spot. Apply steady, even pressure as you begin to cut through the plastic. Avoid forcing the blade, as this can cause it to slip or break the plastic unpredictably. Instead, use controlled strokes, gradually deepening the cut until you penetrate the material.
As you cut, periodically check the progress and adjust your angle if necessary. Plastic can be slippery, so maintain a firm grip on both the knife and the piggy bank. If the piggy bank has a thick or reinforced area, you may need to repeat the cutting motion multiple times, allowing the blade to work through the material gradually. Patience is key to ensuring a clean cut without cracking the plastic unnecessarily.
Once you’ve cut through one side, carefully widen the opening by extending the cut along the seam or edge. This will create a larger access point to remove the coins or bills inside. Be mindful of any sharp edges created by the cut, as plastic can leave jagged edges that may cut skin. If needed, use sandpaper or a file to smooth the edges after breaking the piggy bank.
Finally, after accessing the contents, dispose of the plastic pieces safely, especially if there are sharp edges. Alternatively, if you wish to reuse the piggy bank, consider using strong adhesive or plastic welding to repair the cut. Cutting with a sharp utility knife is an effective method for opening a plastic piggy bank, but it requires attention to detail and safety precautions to achieve the desired result without accidents.
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Frequently asked questions
Wrap the piggy bank in a thick cloth or towel to cushion the coins, then use a hammer or mallet to gently but firmly strike the weakest point, such as the seam or the plug.
If the piggy bank has a removable plug or lid, try prying it open with a butter knife or screwdriver. If not, carefully apply heat to the seam with a hairdryer to soften the plastic, then gently pull it apart.
Yes, you can use a drill with a small bit to create a hole near the bottom or side of the piggy bank. Ensure the hole is large enough to pour out the coins without damaging them.
Place the piggy bank in a large container or plastic bag before breaking it. This will catch the coins and prevent them from scattering everywhere.










































