How do you improve your 3D printed object's strength?

1 Choose the right material

Not all 3D printing materials are created equal. Some are more durable, flexible, or heat-resistant than others. Depending on your project, you should consider the properties of the material you use. For example, ABS is stronger and more resistant to high temperatures than PLA, but it also requires a heated bed and a well-ventilated area. Nylon is tough and flexible, but it absorbs moisture and can warp. PETG is a good compromise between strength and ease of use, but it can be prone to stringing and oozing.

2 Adjust the print settings

The way you print your object can also affect its strength. You can tweak some settings in your slicing software to optimize the quality and durability of your print. For example, you can increase the infill percentage, which is the amount of material used to fill the inside of the object. A higher infill percentage will make the object denser and stronger, but it will also use more material and time. You can also change the infill pattern, which is the shape of the internal structure. Some patterns, such as honeycomb or triangular, are more efficient and stable than others, such as grid or linear.

3 Use the right orientation

Another factor that can influence the strength of your 3D printed object is the orientation of the print. This refers to the direction of the layers and the support structures. The orientation can affect the stress distribution, the surface quality, and the accuracy of the print. Generally, you want to avoid printing long or thin parts vertically, as they can be more prone to breaking or warping. You also want to minimize the use of supports, as they can leave marks or gaps on the print. You can use a software tool, such as Meshmixer, to analyze the best orientation for your object.

4 Apply post-processing techniques

Finally, you can improve the strength of your 3D printed object by applying some post-processing techniques. These are methods that you can use after the print is finished to enhance its appearance or performance. For example, you can use sandpaper, files, or knives to smooth out the rough edges or remove any excess material. You can also use chemicals, such as acetone or epoxy, to dissolve or coat the surface of the print. This can help to fuse the layers together and create a smoother and stronger finish. However, you should be careful with these techniques, as they can also damage or deform the print if not done properly.

5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?