The Most Common Causes of Over Extrusion

Best the Most Common Causes of Over Extrusion

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When your 3D printer extrudes too much material, it might result in dimensional mistakes, oozing blobs, drooping layers, and threads in your pieces. If you’re noticing any of these signs, you’re probably dealing with over extrusion. Here are the most common causes of over extrusion!
Adjust Your Extrusion Multiplier Settings
“The amount of filament that comes out of the nozzle is controlled by the extrusion multiplier. If you witness numerous nozzle jams or huge layers, you can typically detect whether the over extrusion is caused by the extrusion multiplier. Reset the extrusion multiplier in your slicer software’s filament settings to fix the problem. “The default is 1, but you can change it to any value between 0.9 and 1. 1. You should be able to change your extrusion multiplier settings directly from the printer menu”.
Determine the Correct Nozzle Size
The good news is that nozzles can be swapped out quickly. The usual nozzle size is 0.4 mm, “which is suitable for the majority of applications. If your current nozzle isn’t producing the desired results, use a smaller nozzle to bring out more complex elements in your design without risking excessive extrusion”.

Determine the Correct Filament Diameter
If your slicer is configured to the wrong filament diameter, the printer will extrude the filament at a faster rate, resulting in over extrusion. Some of the most common filament diameters are 1.75, 2.85, and 3 mm. In some cases, the filament type will also dictate the flow rate, so be sure you know all the characteristics of the filament before printing.
Lower the Flow Rate
“Because the upper layers have bigger dimensions than the bottom layers, a high flow rate can wreak havoc on your print’s dimensional perfection. Because you must find the appropriate flow rate for each filament, you will be able to find the flow rate best by trial and error. This entails selecting a model and printing it with various flow rates until you achieve the best outcome”.
We hope that this article has helped you further understand the most common causes of over extrusion! If you are looking for more help on 3D printing problems or are experiencing more problems the more you print, be sure you reach out to the manufacturer of your printer! They are likely to have great resources to help ensure you get the most out of your printer!