Optimal Bl Touch Leveling- The Crucial Role of Pre-Heating the Extruder

Should extruder heat before BL Touch leveling?

In the world of 3D printing, achieving precise and accurate prints is crucial for the success of any project. One of the key factors in ensuring a high-quality print is the use of the BL Touch sensor for automatic bed leveling. However, there is often debate about whether the extruder should be heated before initiating the BL Touch leveling process. In this article, we will explore the advantages and disadvantages of heating the extruder before BL Touch leveling and provide insights into the best practices for achieving optimal print quality.

Advantages of heating the extruder before BL Touch leveling:

1. Enhanced adhesion: When the extruder is heated, the filament becomes softer and more pliable. This allows for better adhesion to the print bed, reducing the risk of warping or lifting during the leveling process.

2. Improved print quality: By heating the extruder, you can ensure that the first layer of the print is laid down smoothly and evenly. This can lead to better overall print quality, with fewer defects and a more polished finish.

3. Reduced filament ooze: Heating the extruder can help prevent filament ooze, which can cause blobs or strings on the print bed. This can be particularly beneficial during the BL Touch leveling process, where precise movements are crucial.

Disadvantages of heating the extruder before BL Touch leveling:

1. Increased risk of nozzle clogging: While heating the extruder can improve adhesion and print quality, it also increases the risk of nozzle clogging. If the filament is not properly melted or if the nozzle is not clean, clogs can occur, leading to print failures.

2. Slower leveling process: Heating the extruder requires additional time, which can slow down the overall leveling process. This may be a concern for users who are short on time or have a large queue of prints to process.

Best practices for heating the extruder before BL Touch leveling:

1. Preheat the extruder: Before initiating the BL Touch leveling process, ensure that the extruder is preheated to the appropriate temperature for the filament being used. This will help ensure better adhesion and print quality.

2. Clean the nozzle: Regularly clean the nozzle to prevent clogs and ensure smooth extrusion. This is especially important when heating the extruder, as clogs are more likely to occur at higher temperatures.

3. Use a heated bed: If your printer has a heated bed, it is recommended to use it during the BL Touch leveling process. This will help maintain consistent temperatures and improve adhesion.

4. Monitor the process: Keep an eye on the leveling process to ensure that everything is going smoothly. If you notice any issues, such as oozing or poor adhesion, adjust the extruder temperature or bed temperature accordingly.

In conclusion, heating the extruder before BL Touch leveling can offer several advantages, such as enhanced adhesion and improved print quality. However, it is important to weigh the benefits against the potential drawbacks, such as increased risk of nozzle clogging and a slower leveling process. By following best practices and monitoring the process, you can achieve optimal print quality while minimizing the risks associated with heating the extruder.