Bambu Lab P1S Build Plate: 256 mm Options, and Which Surface for PLA, PETG and ABS
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The P1S uses the 256 by 256 mm Bambu plate, the same one as the P1P, X1 Carbon, A1 and P2S. Buy a textured PEI plate for PLA, PETG, ABS, ASA and TPU; add a smooth PEI plate when you want a glossy bottom on PLA or ABS. Any replacement must have the Bambu front tabs and rear notch.
The P1S ships with a textured PEI plate and prints most materials on it without help. Replacement plates matter for two reasons: the stock plate wears in the centre after a few hundred prints, and the enclosed P1S is the Bambu printer people use for ABS and ASA, which are happier on a smooth plate with glue or on a fresh textured surface. Because the plate size is shared across five Bambu models, the choice of third-party plates is wide.
Where to buy
What to check
- 256 by 256 mm with Bambu tabs and notch.
- Coating thickness stated; thick powder-coat textured PEI lasts longer under PETG and ABS.
- Spring steel 0.5 mm or thicker so it stays flat on the magnetic bed.
- QR code if you want the camera to set the plate type automatically; otherwise set it in the slicer.
Surface by material on the P1S
- PLA: textured PEI at 55 to 65 °C, or smooth PEI for a glossy bottom.
- PETG: textured PEI at 70 to 80 °C. Never bare smooth PEI.
- ABS and ASA: textured PEI at 90 to 100 °C with the door closed and top glass on, or smooth PEI with glue stick. Lifting corners mean the chamber was cold.
- TPU: textured PEI at 40 to 50 °C.
The plates in the box
The two thicker textured PEI plates with QR codes are the 256 mm everyday replacements; the double-sided smooth PEI plate is for glossy PLA and for ABS with glue. See smooth versus textured for the trade-offs.
Swapping
- Wash with dish soap and water; dry; do not touch the surface.
- Set the plate type in Bambu Studio to match.
- Let the P1S run its first-layer calibration on the new plate.
- Keep the stock plate as a spare for PLA.
FAQ
Do X1C plates fit the P1S? Yes; identical size and tabs.
Can I print PETG on the smooth plate? Only with glue stick as a release layer.
Why does my first layer fail on a new plate? Handling grease. Wash it.
LayerWalker
Print defect diagnosis, calibration procedures and parts that actually fit. Corrections welcome through the contact page.
