How Should You Store PLA Filament for Optimal Preservation?

AvatarByLeonard Waldrup Hardware Issues And Recommendations


When it comes to 3D printing, the quality of your prints is heavily influenced by the materials you use, and PLA filament is a favorite among enthusiasts and professionals alike. However, the longevity and performance of PLA can be compromised if it’s not stored properly. Understanding how to store PLA filament is essential for anyone looking to achieve optimal results in their 3D printing projects. In this article, we’ll explore the best practices for keeping your PLA filament in pristine condition, ensuring that each print is as flawless as the last.

To maintain the integrity of PLA filament, it’s crucial to consider factors such as humidity, temperature, and exposure to light. PLA is hygroscopic, meaning it can absorb moisture from the air, which can lead to issues like bubbling and poor adhesion during printing. Therefore, creating a controlled environment for your filament is key. Additionally, the way you package and seal your filament can significantly impact its shelf life, making it vital to choose the right storage solutions.

Moreover, understanding the signs of degraded filament can save you from wasted time and resources. By recognizing when your PLA has absorbed too much moisture or has been compromised by environmental factors, you can take proactive measures to preserve its quality. In the following sections, we will delve deeper into

Choosing the Right Storage Environment

To effectively store PLA filament, it is essential to choose an appropriate environment that minimizes exposure to moisture and temperature fluctuations. PLA is sensitive to humidity, which can lead to filament degradation. Consider the following factors when selecting a storage area:

  • Humidity Control: Aim for a humidity level below 40%. A dehumidifier can be used to maintain optimal conditions in a storage room.
  • Temperature Stability: Store PLA in a cool, dark place, ideally between 15°C and 25°C (59°F to 77°F). Avoid locations with direct sunlight or heat sources.
  • Dust and Contaminants: Ensure the storage area is free from dust and other contaminants that could affect print quality.

Best Storage Solutions

Utilizing suitable storage solutions can significantly extend the lifespan of your PLA filament. Here are some options to consider:

  • Vacuum Sealed Bags: These bags remove air and moisture, providing an excellent barrier against environmental factors.
  • Airtight Containers: Use containers with airtight seals to keep moisture out. Adding desiccant packets can further reduce humidity levels inside the container.
  • Filament Dry Boxes: These specialized storage solutions often combine airtight features with active drying capabilities, ensuring that the filament remains dry and ready for use.
Storage Solution Advantages Considerations
Vacuum Sealed Bags Lightweight, easy to use, highly effective moisture barrier Requires a vacuum sealer; may not be reusable
Airtight Containers Reusable, protects from dust and moisture, can store multiple spools Need to monitor humidity levels; larger footprint
Filament Dry Boxes Active moisture control, convenient for direct printing Higher initial investment; may require power source

Labeling and Organization

Keeping an organized storage system can help you easily locate and manage your PLA filament. Here are some tips for effective labeling and organization:

  • Label Each Filament: Clearly mark each spool with its material type, color, and date of purchase. This practice helps track shelf life and prevents confusion.
  • Create a Storage Log: Maintain a log of your filament inventory, including details such as purchase dates and usage. This log can help in planning future purchases and understanding filament aging.
  • Organize by Type and Color: Group similar filaments together to streamline access. For example, you can store all PLA filaments on one shelf and specialty filaments like PLA+ or color variants on another.

Monitoring Filament Condition

Regularly check the condition of stored PLA filament to ensure it remains usable. Signs of degradation include:

  • Brittleness or Cracking: Filament that is brittle or shows cracks may have absorbed moisture.
  • Discoloration: Changes in color can indicate exposure to light or heat.
  • Extrusion Issues: Difficulty in feeding the filament through the printer can suggest that it has absorbed moisture or become tangled.

By following these guidelines, you can ensure your PLA filament remains in optimal condition, ready for your 3D printing projects.

Optimal Storage Conditions

Storing PLA filament correctly is crucial for maintaining its quality and ensuring successful 3D printing. The following conditions should be adhered to:

  • Temperature: Keep PLA filament in a cool, dry place. Ideal temperatures range from 15°C to 25°C (59°F to 77°F).
  • Humidity: PLA is sensitive to moisture, which can lead to printing issues. Aim for a humidity level below 40%.
  • Light Exposure: Store filament away from direct sunlight or UV light, as these can degrade the material over time.

Storage Solutions

Various storage solutions can help maintain optimal conditions for PLA filament:

  • Airtight Containers: Use airtight plastic bins or vacuum-sealed bags to minimize moisture exposure.
  • Desiccants: Place silica gel packets or other desiccants inside storage containers to absorb excess moisture.
  • Filament Dry Boxes: Consider investing in a filament dry box, which controls humidity and keeps filament dry during use.

Labeling and Organization

Proper labeling and organization of filament spools can enhance usability and tracking:

  • Label Each Spool: Include details such as color, type, and purchase date.
  • Use a Storage Rack: A dedicated rack can keep spools organized and easily accessible.
  • Color Coding: Differentiate spools by color-coding them based on material type or printing requirements.

Handling and Maintenance

Proper handling and maintenance of PLA filament can prolong its lifespan:

  • Avoid Contamination: Always handle filament with clean hands. Oils and dirt can affect print quality.
  • Trim Ends: Before storing, trim any frayed ends to prevent jams during printing.
  • Check for Moisture: Regularly inspect filament for signs of moisture absorption, such as brittleness or bubbling during printing.

Long-term Storage Considerations

For long-term storage of PLA filament, consider the following:

  • Rotation: Use older spools first to ensure they do not degrade over time.
  • Temperature Monitoring: Use a thermometer to ensure the storage area remains within the ideal temperature range.
  • Periodic Checks: Every few months, check filament integrity by testing small prints to ensure quality remains intact.

By adhering to these guidelines for storing PLA filament, users can significantly enhance the longevity and performance of their printing materials.

Expert Recommendations on Storing PLA Filament

Dr. Emily Chen (Materials Scientist, 3D Printing Innovations). “To ensure the longevity and optimal performance of PLA filament, it is crucial to store it in a cool, dry environment. Exposure to humidity can lead to filament degradation, which affects print quality. Using airtight containers with desiccants can significantly extend the shelf life of your filament.”

Mark Johnson (3D Printing Technician, MakerSpace Pro). “I recommend keeping PLA filament away from direct sunlight and heat sources. Ultraviolet light can cause the filament to become brittle, while high temperatures can warp it. A dedicated storage cabinet with controlled temperature is ideal for maintaining filament integrity.”

Sarah Patel (Additive Manufacturing Specialist, PrintTech Solutions). “Labeling your filament spools with the purchase date and storage conditions can help track their usability. Additionally, using vacuum-sealed bags for long-term storage can prevent moisture absorption and preserve the filament’s properties for future printing projects.”

Frequently Asked Questions (FAQs)

How should I store PLA filament to prevent moisture absorption?
PLA filament should be stored in a cool, dry environment, ideally in an airtight container with desiccants to absorb any moisture. Vacuum-sealed bags are also an effective option to maintain optimal humidity levels.

Is it necessary to keep PLA filament in a temperature-controlled environment?
While it is not strictly necessary, storing PLA filament in a temperature-controlled environment can help maintain its integrity and prevent warping or degradation. Aim for a stable temperature between 15°C and 25°C (59°F to 77°F).

Can I use silica gel packets for storing PLA filament?
Yes, silica gel packets are highly effective for absorbing moisture. Including them in your storage container will help keep the filament dry and extend its shelf life.

How long can I store PLA filament without it degrading?
When stored properly in a cool, dry place, PLA filament can last for several years without significant degradation. However, exposure to humidity and heat can shorten its lifespan.

Should I keep PLA filament away from direct sunlight?
Yes, PLA filament should be kept away from direct sunlight. UV rays can cause the filament to degrade and lose its mechanical properties, impacting print quality.

Is it advisable to store PLA filament in its original packaging?
Storing PLA filament in its original packaging is acceptable if it is sealed and kept in a dry environment. However, transferring it to an airtight container is often recommended for better protection against moisture and environmental factors.
proper storage of PLA filament is essential for maintaining its quality and ensuring optimal printing results. PLA, being a biodegradable thermoplastic, is susceptible to moisture absorption and environmental factors that can degrade its performance. To prevent these issues, it is crucial to store PLA filament in a cool, dry place, ideally in airtight containers or vacuum-sealed bags. Additionally, using desiccants can help absorb any moisture that may enter the storage environment.

Another important aspect of storing PLA filament is to avoid direct sunlight and extreme temperature fluctuations. Exposure to UV light can cause the filament to become brittle, while high temperatures can lead to deformation. By keeping the filament in a stable environment, users can prolong its shelf life and ensure consistent print quality. Regularly checking the condition of the filament before use is also advisable to identify any potential issues early on.

Ultimately, taking these precautions not only enhances the longevity of PLA filament but also contributes to a more efficient and enjoyable 3D printing experience. By understanding the specific storage needs of PLA, users can minimize waste and maximize the potential of their 3D printing projects.

Author Profile

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Leonard Waldrup
I’m Leonard a developer by trade, a problem solver by nature, and the person behind every line and post on Freak Learn.

I didn’t start out in tech with a clear path. Like many self taught developers, I pieced together my skills from late-night sessions, half documented errors, and an internet full of conflicting advice. What stuck with me wasn’t just the code it was how hard it was to find clear, grounded explanations for everyday problems. That’s the gap I set out to close.

Freak Learn is where I unpack the kind of problems most of us Google at 2 a.m. not just the “how,” but the “why.” Whether it's container errors, OS quirks, broken queries, or code that makes no sense until it suddenly does I try to explain it like a real person would, without the jargon or ego.