The choice between a slick or patterned polyetherimide (PEI) print surface is a significant consideration in fused deposition modeling (FDM) 3D printing. The surface finish greatly influences the adhesion characteristics and the aesthetic outcome of the printed object. A smooth surface creates parts with a glossy, reflective finish, while a textured surface yields a matte appearance with enhanced first-layer adhesion. For instance, printing components that require a high degree of visual polish, such as decorative items, can benefit from the use of a smooth sheet. Conversely, printing functional parts that demand strong adhesion to the build plate might be better served by a textured sheet.
The implementation of either surface finish impacts the print process considerably. A smooth surface often necessitates careful calibration and potentially the application of adhesive agents to ensure proper bed adhesion. Conversely, the texture on a textured surface offers a larger contact area and mechanical interlocking with the printed material, promoting robust adhesion and minimizing the risk of warping, especially when printing materials prone to contraction, such as ABS. Historically, smooth surfaces were prevalent, but textured surfaces have gained popularity due to their ease of use and reliability, particularly for hobbyist printers.
