What is the most common material used in build plates for FDM printers?

The most common material used in build plates for Fused Deposition Modeling (FDM) printers is glass. Glass provides a smooth surface that helps in achieving good adhesion for the first layer of the print, which is crucial for the success of the printing process. It is also easy to clean and does not warp, ensuring a consistent surface for multiple prints. Additionally, glass can withstand the heat typically generated during the printing process and allows for easy temperature control. Its flat nature reduces the risk of deviations during printing, helping to produce accurate results and facilitating easy removal of completed prints once cooled.

Other materials may be used for build plates, but they often come with drawbacks such as warping or adhesion issues. Glass stands out for its combination of stability, ease of maintenance, and efficiency in FDM printing environments.