Initial layer height refers to the thickness of the very first layer printed during a 3D printing process. It's often set to be thicker than subsequent layers to improve adhesion to the print bed. This increased thickness helps compensate for minor imperfections on the print bed surface, ensuring a strong foundation for the rest of the print.
Why is Initial Layer Height Important?
- Improved Bed Adhesion: A thicker first layer provides a larger contact area, improving the bond between the print and the bed, reducing the risk of warping or lifting.
- Compensation for Imperfections: A slightly thicker layer can compensate for minor inconsistencies in bed leveling, ensuring a solid starting point.
- Enhanced Print Stability: A strong initial layer provides a stable base for the rest of the print, reducing the chances of print failures.
Many 3D printing slicers allow you to adjust the initial layer height independently from the subsequent layer height. A common approach is to set the initial layer height to 100-200% of the standard layer height. For example, if your standard layer height is 0.2mm, you might set your initial layer height to 0.2mm - 0.4mm. The optimal setting depends on factors like the printer, material used, and bed surface.
As noted in various sources, including a Reddit discussion on 3D printing settings (https://www.reddit.com/r/3Dprinting/comments/68y0jy/what_are_your_first_layer_settings/), a common initial layer height is 0.3mm. However, the ideal value is often determined through experimentation. Sources like Simplify3D (https://www.simplify3d.com/resources/articles/perfecting-the-first-layer/) and 3DQue (https://www.3dque.com/blog/10-reasons-to-print-thick-first-layers) highlight the importance of the first layer and its thickness for successful 3D printing. Remember, the initial layer height is the thickness of the first layer, not the Z-position. (https://community.ultimaker.com/topic/27001-nozzle-height-vs-initial-layer-height/)
