FDM printing, also known as fused deposition modeling, is a type of 3D printing technology used for producing plastic parts. In this process, a filament of thermoplastic material is heated and extruded through a die to create the desired shape layer by layer. While FDM printing is a very popular process, it is not without its challenges. One of these challenges is finding the right settings for your part. In this article, we'll take a look at some common mistakes that can occur when printing parts using FDM printing and how to avoid them.
Over or under extrusion
One of the most common problems with 3D printing with FDM is over- or under-extrusion. Over 98% of the time, these problems are caused by incorrect nozzle size or layer height. If your nozzle is too small, your filament will not be able to flow through it properly and will get clogged. On the other hand, if your nozzle is too large, the filament will not be extruded evenly, resulting in an uneven surface. To avoid these problems, it is important to choose the correct nozzle size for your printer and use the recommended layer height for your filament.
Warping
Another common problem with FDM printing is warping. Warpage occurs when the plastic cools and shrinks at different rates, causing the part to deform. This can be caused by a number of factors such as: B. due to incorrect printer settings, incorrect bed adhesion or using the wrong type of filament. To avoid warping, it's important to use the correct printer settings for your material, ensure the bed adheres properly to the part, and choose the correct filament for your application.
Threading
Stringing is another common problem with FDM printing. Stinging occurs when small plastic threads are left between two points of print. This can be caused by a number of factors, such as: E.g. due to incorrect nozzle temperature, incorrect retraction settings or using the wrong filament type. To avoid stringing, it is important to use the correct nozzle temperature for your material, use the correct retraction settings for your printer and choose the correct filament.
Liability issues
Another common problem with FDM printing is poor adhesion. This can be caused by a number of factors such as: B. due to an incorrect temperature in the print bed, incorrect settings for the first layer or using the wrong type of filament. To avoid poor adhesion, it is important to use the correct bed temperature for your material, choose the correct first layer settings for your printer, and use the correct filament.
Support
If your part is too complex, you may need to use supports. Supports are structures that are printed along with the part to support it during printing. They can be made from the same material as the part or from a different material. When using supports, it is important that you use the correct settings for your printer and select the correct type of support material.
Conclusion
In this article, we've looked at some of the most common problems with FDM printing and how you can avoid them. By following these tips, you can improve your chances of success with 3D printing in the field of Fused Deposition Modeling.