A spring-steel build plate on a magnetic base is the standard on modern FDM printers. Prints stick while the plate is hot, then pop off when you flex the cooled plate. The surface coating decides how well each material sticks and what the bottom of the part looks like.
Surfaces compared
| Surface | Finish on the part | Good for |
|---|---|---|
| Textured PEI | Matte, slightly grippy texture | Everyday PLA, PETG, ABS and ASA. PETG releases easily without damaging the surface. |
| Smooth PEI or PEX | Glossy, flat | PLA and ABS where a smooth bottom face matters. Use a release agent with PETG. |
| Carbon fiber | Fine matte texture | Engineering materials and high-temperature work, depending on the manufacturer's material list. |
Getting the size right
Plates are sold by printer family and by dimensions, for example 258 x 258 mm for the Bambu Lab A1, P1 and X1 family. Match both the printer model and the size listed on the product. If you replace a magnetic base, match its size to the plate.
Care
Wash plates with dish soap and water to remove skin oils, avoid touching the print area, and wipe with isopropyl alcohol between prints. Clean plates fix most adhesion problems without glue.
Use the compatibility finder to see every plate listed for your printer.
