Bambu Lab Build Plate Guide: Which Plate for Which Material

Bambu’s build plates are not interchangeable: each one is a coating designed for a temperature band, and the filament profiles literally refuse some combinations by setting the bed to 0. Here is what each plate is for, the exact temperatures Bambu’s profiles use, and the two rituals — soap and glue — that keep them working.

The plates at a glance

• Textured PEI — the rough gold plate. The everyday all-rounder: takes everything from PLA to PC, hides first-layer flaws in its texture, releases parts when it cools. If you only own one plate, own this one.
• Smooth PEI / High Temp plate — same temperature reach as textured PEI but with a smooth, glossy finish on the part’s underside. Grips harder, which is a feature for ABS and a hazard for PETG and TPU (more below).
• Engineering plate — the original smooth high-temperature surface, aimed at ABS, ASA, PA and PC. Runs the same bed temperatures as textured PEI in Bambu’s profiles.
• Cool Plate — the original low-temperature PLA plate. Runs the bed barely warm (35 °C for PLA) and is marked incompatible with every high-temperature material.
• Cool Plate SuperTack — the Cool Plate’s successor: grips PLA at just 40 °C without glue and releases effortlessly. Its coating has a hard temperature ceiling, so it is a PLA-and-friends plate, not a universal one.

Which material on which plate — the actual numbers

These are the bed temperatures Bambu’s current (X2D-generation) filament profiles set per plate. A 0 means Bambu marks the combination unsupported — the slicer will warn you, and overriding it risks the coating:

The pattern is simple: low-temperature coatings (Cool Plate, SuperTack) take low-temperature materials; everything from PETG up wants one of the three high-temperature surfaces. In Bambu Studio the right row is picked automatically when you select the plate type on the Prepare screen — which is why choosing the correct plate in the dropdown matters as much as physically swapping it.

Bambu Studio: Prepare → the plate-type dropdown next to the printer; temperatures live in Filament settings → Filament

The two special cases worth memorising

Glue: when and why

Glue stick has two distinct jobs, and knowing which one you’re doing helps:

• As a release agent (thin, even film): mandatory insurance for PETG and TPU on smooth PEI, and practically mandatory for PA and PC on any plate — those two grip so hard at 100–110 °C that the film protects the coating when you pry the part off.
• As an adhesion helper (same thin film, different intent): a stopgap for a plate whose coating is past its prime, or for materials that need a little extra grip on a surface they only barely like.

The SuperTack’s whole selling point is that PLA needs no glue on it at all. If you find yourself gluing PLA onto a SuperTack, the plate needs washing, not glue.

The wash ritual: dish soap, not just IPA

Every plate loses grip the same way: skin oil. You touch the surface while removing a print, the next first layer sits on a fingerprint-thin film of grease, and the corner above that fingerprint lifts. Wiping with isopropyl alcohol mostly smears the film around — it thins the grease without removing it.

The fix costs two minutes: wash the plate with warm water and a squirt of ordinary dish soap, rubbing with a clean soft sponge, rinse thoroughly, and dry with a lint-free towel (or let it air-dry). From then on, handle the plate by its edges only. Do this whenever adhesion gets flaky — and always before blaming a setting, because a greasy plate perfectly imitates half the problems in our bed adhesion guide. For stubborn PETG or TPU residue on PEI, let the plate cool completely first; most residue pops off a cold plate by itself.

Plate care and lifespan

• Scrape with the plate cold — most materials release on their own once the plate drops below their bed temperature, and cold scraping needs a fraction of the force.
• Keep glue residue from building up in layers: an old glue crust holds dust and prints unevenly. Soap and warm water dissolve standard glue stick.
• A PEI plate that has gone permanently matte-grey in the print area after heavy use has simply worn out its coating; no amount of washing revives it. Textured PEI sheets are consumables, just slow ones.
• Check the back of the plate and the heatbed for stuck debris before clipping it on — a crumb of old filament under the plate becomes a first-layer bump the auto-leveling can’t fully hide, as covered in the first layer calibration guide.