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How to Make 3D Prints Stronger

  • 7 min read

How to Make 3D Prints Stronger: Effective Techniques and Tips

In the dynamic world of 3D printing, achieving strength and durability in prints is a paramount goal for enthusiasts and professionals alike. The quest to understand how to make 3D prints stronger involves exploring a multitude of methods and techniques, each contributing significantly to the end product's resilience.
This challenge encompasses various aspects of the printing process, from the initial design phase to the very last steps of post-processing. Whether it’s through selecting the most appropriate 3D printer filaments, adjusting intricate printer settings, or employing advanced printing techniques, each decision plays a crucial role in enhancing the strength of 3D prints.
In this article, we will delve deep into these varied methods, providing valuable insights into fortifying prints. Join us on this journey to enhance the strength and durability of your 3D prints.

Methods to Make Strong 3D Prints

For creating robust 3D prints that last longer, here are various strategies to enhance their strength and durability. These methods include:


Design Properly

A critical aspect of achieving strong 3D prints is designing them properly. Consider using triangle infill patterns because they are less likely to deform and offer superior support structures. You can also use rectangle infill patterns, for they can achieve 100% density by forming a grid of parallel and perpendicular extrusions. Additionally, tessellated hexagons offer the highest strength-to-weight ratio, further enhancing the structural integrity of 3D prints.
Besides, you can increase the wall thickness and optimize the design for load-bearing, thereby significantly bolstering the strength of the final printed object. For example, you can set the wall thickness to 2-3 mm and the top and bottom thickness to 1.6-2 mm.


Adjust Printer Settings

The settings on your 3D printer significantly influence the strength of your prints. You can adjust parameters like infill density, layer height, printing speed, and temperature.


  • Increase Infill Density:Infill density varies between 0% and 100%. Opting for lower infill density reduces printing time and material usage, yet compromises the strength of the final projects. To ensure stronger 3D prints, for display pieces use infill between 0% and 25%, for general use prints such as keychains use 20%-50% and for load bearing items use 50%-100%.
  • Use Thin Layer:Thinner layers generally contribute to stronger 3D prints due to better interlayer adhesion. It is recommended to reduce the layer height to a range of 0.05 to 0.2 mm for a stronger print.
  • Optimizing Layer Height for Enhanced 3D Print Strength: Utilizing thinner layers can significantly improve the overall strength of 3D printed objects, primarily due to better interlayer adhesion. It is advisable to set the layer height between 0.05 to 0.2 millimeters to achieve optimal structural strength. However, it's crucial to consider that different materials and printer types may respond differently to various layer heights. When determining the best layer height, factors such as the material properties, printer precision, and the interplay of other printing parameters should be carefully evaluated.
  • Reduce Printing Speed:Enhancing the strength of 3D prints is achievable by operating the printer at a reduced printing speed. This adjustment allows for better filling of potential gaps that might be overlooked at higher printing speeds, thereby optimizing the overall 3D printing quality and strength.
  • Decrease Cooling Speed:Decreasing the cooling speed allows more time for the layers to bond effectively. Rapid cooling can sometimes lead to insufficient adhesion between layers, resulting in weaker connections and potentially compromising the overall strength of the printed object. Adjusting the cooling settings, especially for materials like PETG that benefit from slower cooling, helps ensure better layer adhesion and, consequently, stronger final prints.


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  • AnkerMake M5 3D Printer
AnkerMake M5 3D Printer is a cutting-edge 3D printer engineered to boost print strength while pushing speed and precision boundaries in printing technology. This printer can reach an astounding speed of 500 mm/s, combined with precise 0.1 mm detailing. Equipped with an integrated AI camera, the M5 3D printer ensures meticulous monitoring of prints, creating flawless timelapses effortlessly. The PowerBoost™ 2.0 technology guarantees a 30% increase in power release, allowing accelerated speeds without compromising print quality. With easy assembly, a robust aluminum structure, and a generous print volume of 235×235×250 mm³, the M5 unleashes creativity without limits. Whether remotely initiating prints via the AnkerMake App, the M5 sets a new standard for durable 3D prints.


  • AnkerMake M5C 3D Printer
AnkerMake M5C 3D Printer is a pioneering 3D printer engineered to fortify prints, excelling in high-speed, precise, and versatile printing. With a rapid 500 mm/s printing speed and 0.1 mm precision, it ensures high-quality printing while maintaining the highest print durability. With its reliable quality, 35 mm³/s extrusion flow, and all-metal hotend, its aluminum alloy structure guarantees stability. Boasting features like 7×7 auto-leveling, customizable one-click buttons, and effortless multi-device control with the AnkerMake app, it offers unparalleled convenience and user-friendly operation. Supporting various nozzle sizes, from 0.2 mm for intricate detailing to 0.4 mm for standard prints, it ensures exceptional quality, setting a new standard for robust 3D prints, ideal for professionals and enthusiasts alike.

Select Strong Material

Choosing the right 3D printer filaments is crucial for achieving strong 3D prints. Opting for materials like ABS, PETG, and other specialized filaments is paramount when aiming for superior strength and durability. These materials offer exceptional resilience, surpassing standard options like PLA, making them indispensable for projects that demand heightened durability and strength. The use of these strong 3D printing materials is instrumental in achieving lasting, high-performance prints, particularly for applications requiring increased toughness and endurance.

Post-processing Tips to Make Your 3D Prints Stronger

In this section, we will explore essential post-processing techniques that can help you reinforce and fortify your 3D prints, ensuring they withstand the demands of your intended applications:

Sanding and Smoothing

Sanding and smoothing are essential post-processing steps for strengthening 3D prints. These techniques not only improve the appearance of your prints but also enhance their structural integrity. By carefully sanding the surface and eliminating rough edges and visible layer lines, you can create a smoother, more uniform finish that distributes stress more evenly across the print.
This smoothing process is especially valuable when working with stronger materials, as it helps maximize their potential by reducing weak points and vulnerabilities. By reducing the likelihood of cracks and weak spots, your 3D-printed objects become more robust and better equipped to withstand the demands of their intended use.

Epoxy Coating and Filling

Epoxy coatings and fillings can significantly improve the strength and structural integrity of 3D prints. By applying epoxy, particularly in areas of high stress, prints gain additional reinforcement, making them more resilient under load. This technique is especially beneficial for parts printed with high-strength materials and those produced by printers known for their precision and quality.

Annealing for Suitable Materials

Annealing, which involves slowly heating and cooling a print, can greatly enhance the strength and thermal resistance of materials like PLA. This process, ideal for parts printed with strong 3D printing materials, helps in relieving internal stresses and realigning the material's molecular structure, thus improving its mechanical properties.


In conclusion, how to make 3D prints stronger is a multifaceted process. But with the right tips and techniques, 3D prints can be incredibly strong and durable. It all starts with utilizing stronger filament varieties, using support structures strategically, and post-processing contributions. In addition to following these simple steps, you should also remember to keep a sharp eye on the quality of each layer when printing, as that will affect your end results. With your newfound knowledge of processes for creating stronger 3D prints, we hope you can take your 3D prints to new heights by exploring different variations of materials and experimenting with your newfound know-how.

Frequently Asked Questions about “how to make 3d prints stronger”

Can You Bake 3D Prints to Make Them Stronger?

Yes, baking or annealing certain 3D prints, particularly those made with PLA, can enhance their strength. This process involves heating the object to a specific temperature below its melting point and then allowing it to cool gradually. Annealing rearranges the material's internal structure, improving its strength and thermal resistance. However, it requires careful temperature control to prevent any warping or distortion of the print.

Why Are My 3D Prints So Weak?

There could be several reasons why your 3D prints might exhibit weakness:


  • Incorrect Printing Parameters: Inaccurate settings such as low infill density, improper layer adhesion due to incorrect temperatures, or inadequate cooling can lead to weakened prints.
  • Design Flaws:Structural weaknesses in the design, like thin walls, unsupported overhangs, or insufficient infill, can compromise the strength of the printed object.
  • Poor Material Choice:Using a filament unsuitable for the intended application or one with inferior mechanical properties might result in weak prints.
  • Printing Issues: Problems during printing, like nozzle clogs, inconsistent extrusion, or improper bed leveling, can negatively impact print quality and strength.
  • Post-Processing Neglect: Lack of post-processing techniques, such as sanding, smoothing, or reinforcing weak areas, can lead to weakened prints.


At What Temperature Does PLA Lose Strength?

PLA, a commonly used 3D printing filament, begins to soften and lose its structural integrity at relatively lower temperatures compared to some other materials. PLA starts to lose strength and becomes pliable at around around 50–60 degrees Celsius (122-140 degrees Fahrenheit). At these temperatures, PLA becomes more malleable, potentially leading to warping or deformation of the printed object. It's important to note that this softening point may slightly vary based on the specific composition and additives present in the PLA filament.