Is PETG Filament Dishwasher Safe

Is PETG Filament Dishwasher Safe

The Ultimate Guide to PETG Filament: Is It Dishwasher Safe?

If you’re an avid 3D printing enthusiast or simply someone curious about the capabilities of PETG filament, you might be wondering if it’s safe to put your printed creations in the dishwasher. PETG (polyethylene terephthalate glycol-modified) filament is known for its strength, durability, and versatility. In this blog post, we will explore the question: Is PETG filament dishwasher safe? Read on to discover everything you need to know about using PETG-printed items in the dishwasher.

Is PETG Filament Dishwasher Safe? PETG filament is a popular choice for 3D printing due to its unique properties. It is widely regarded as food-safe, chemical-resistant, and can withstand high temperatures without warping or melting. While PETG is indeed a durable material, it’s essential to consider a few factors before putting your 3D-printed items in the dishwasher.

Temperature Limitations: Although PETG has a relatively high glass transition temperature (around 80°C to 85°C), most dishwashers operate at higher temperatures. The standard dishwasher temperature can range from 50°C to 70°C for the wash cycle, and even higher during the drying cycle. Continuous exposure to high temperatures beyond PETG’s glass transition point may cause it to soften, warp, or lose its structural integrity.

Design Considerations: The design of your 3D-printed object can also impact its dishwasher suitability. Items with intricate details, thin walls, or delicate features may not fare well under the high-pressure water jets and turbulent environment inside a dishwasher. Consider the structural strength and thickness of the printed object when deciding whether it can withstand the dishwasher’s conditions.

Post-Processing Techniques: Certain post-processing techniques, such as annealing or smoothing, can enhance the strength and durability of PETG prints. Annealing involves heating the printed object to a specific temperature and allowing it to cool slowly, resulting in increased rigidity. While annealing can improve the heat resistance of PETG prints, it does not guarantee dishwasher safety. Smoothing techniques, like sanding or using chemical agents, can also impact the material’s performance in a dishwasher.

Recommendations for Using PETG Prints in the Dishwasher:

  1. Consider the design and structural strength of your printed object. Avoid intricate or fragile designs that may not withstand the dishwasher’s conditions.
  2. If the printed object is intended for food use, ensure it is thoroughly cleaned and free from any contaminants before placing it in the dishwasher.
  3. Use a lower temperature setting if your dishwasher has the option, or consider hand-washing PETG items to preserve their integrity.
  4. If you’re unsure about a specific print’s dishwasher suitability, perform a test run by placing it in the dishwasher for a single cycle and observing any changes.


Q: Can I put PETG prints in the dishwasher? A: While PETG is a durable material, it is generally not recommended to put PETG prints in the dishwasher. The high temperatures and turbulent environment inside dishwashers can soften or warp PETG prints, potentially compromising their structural integrity.

Q: Can I use PETG prints for food-related applications? A: PETG is considered food-safe and can be used for food-related applications. However, it’s important to note that dishwasher use may not be ideal for these prints due to the reasons mentioned above.

Q: How can I clean PETG prints effectively? A: For regular cleaning, hand-washing with mild detergent and warm water is typically sufficient. Ensure thorough rinsing to remove any residue. For more stubborn stains, you can use a soft brush or sponge.

Q: Are there alternative materials that are dishwasher safe? A: Yes, materials like PLA, ABS, and certain types of nylon are generally considered more dishwasher-safe than PETG. However, it’s always advisable to check the specific properties of each material and consider the intended use before exposing them to dishwasher conditions.

Conclusion: While PETG filament offers many desirable qualities for 3D printing, it is generally not recommended to put PETG prints in the dishwasher. The high temperatures and turbulent environment inside dishwashers can potentially compromise the structural integrity of PETG prints. However, if you must use your PETG-printed items in the dishwasher, it’s essential to consider factors like temperature limitations, design strength, and post-processing techniques to minimize the risk of damage. Remember to test prints and exercise caution when using PETG prints in the dishwasher to ensure the longevity of your creations.