Upgrade 3d printing surface: Janusbps printing platform for MK52 - MK3 - MK3S - MK3S+ - MK4 - MK3.9 3D printer, not for XL. Textured PEI Powder (Gold) + PET-CF Coating sheet (Black), both sides can be used. Compatible with various kinds of 3d printing material, such as PLA, PETG, ABS, TPU, TPE, HIPS, PA-CF, WOOD etc. Recommend ABS on the Powder-coated bed. The pattern that gets transferred is very cool Double sides Build Plate: One side textured pei powder(Gold) + another coated PET-Carbonfiber sheet, gives you two Different experiences on one plate just by flipping it over. The matte texture makes it easier for the printing material to adhere to the surface, especailly for ABS. So does the new side. It leaves a smooth finish inside with the beautiful-texture finish. The PET-CF surface has grids to help observe nozzle positioning easily Solution for first layer adhesion: Do Not sand on this CarbonPET bed to avoid permanent damage.** No glue, No tap, Adjusting an Appropriate Z valu