What is a common method to improve first layer adhesion during FDM printing?

Improving first layer adhesion during Fused Deposition Modeling (FDM) printing is crucial for ensuring that the print adheres well to the build platform. One effective method to achieve this is by increasing the bed temperature or utilizing adhesives.

When the print bed temperature is increased, the material being extruded (typically thermoplastics like PLA or ABS) sticks better to the heated surface, reducing the risk of warping and ensuring that the layers bond effectively. The elevated temperature helps maintain the filament in a semi-molten state during the initial layer, which enhances adhesion to the surface.

Additionally, using adhesives such as glue sticks, painter’s tape, or specialty adhesion sprays can create a better bond between the filament and the print bed. These adhesives can provide a textured surface or additional chemical bonding, further reinforcing the grip of the filament during the printing process.

These strategies are widely employed in practice to ensure a successful first layer, as it lays the foundation for the entire print. Proper first layer adhesion is essential for overall print quality and preventing failures caused by lifting or shifting during the print process.

In contrast, increasing print speed might lead to inadequate time for the filament to bond with the bed surface, while using highly viscous filaments may not