How to Fix Bed Adhesion Problems on Bambu Lab Printers
When a print refuses to stick — or lets go halfway through and turns into spaghetti — the cause is almost always one of three things: a greasy plate, the wrong plate for the material, or the wrong bed temperature. Work through them in that order.
Why parts stop sticking
A build plate holds a print through a thin bond between the first layer of plastic and the plate coating. Anything that weakens that bond — finger grease, a plate the material was never meant for, a bed that is too cold, or aggressive cooling — lets the shrinking forces inside the print win.
Quick fixes
Wash the plate with dish soap and warm water. Finger grease is the number one adhesion killer, and an IPA wipe mostly redistributes it. Soap actually removes it. Dry with a clean towel and handle the plate by its edges from then on.
Set the right bed temperature for the material. On a textured PEI plate, use roughly: PLA 55–65 °C, PETG 70–85 °C (it grips best around 80–85), ABS 90–100 °C, ASA 100 °C, PA 100–105 °C, PC 110 °C.
Add a brim. Brim type Outer brim only, width 8 mm. More contact area means more holding force, especially on parts with a small footprint.
Slow the first layer down. Bambu’s default first-layer speed is 50 mm/s; dropping to 20 mm/s gives each line time to be pressed into the surface instead of skating over it.
Match the plate to the material
Bambu marks unsupported plate/material combinations by setting the bed temperature to 0 in the stock profile — if you see that, the combination is a dead end, not a tuning problem:
- PETG on the Cool Plate is marked incompatible. Use textured PEI at 70–80 °C, or the SuperTack at 60 °C maximum.
- TPU on the SuperTack is marked incompatible — TPU can bond so hard that removing the print tears the coating off. Use textured PEI at 35 °C.
- ABS, ASA, PA and PC on the SuperTack or Cool Plate: never. These materials need a 90–110 °C bed, and that destroys a low-temperature coating. The SuperTack must never go above 65 °C. Use textured PEI or the Engineering Plate.
- PETG or TPU on smooth PEI can weld itself to the surface. Put down a thin layer of glue stick as a release agent — it protects the plate and evens out adhesion.
- PLA or PETG on the Engineering Plate is allowed (Bambu’s profiles set 55–70 °C) but grips noticeably worse than PEI. Use glue, or better, switch plates.
Hardware and environment
- Check the auxiliary (side) fan. On the X2D, H2D, X1C, X1E and P1S it blows across the plate, so a barely-stuck edge on the side facing the fan peels first. If prints always release on that side, reduce the auxiliary fan speed (Filament settings → Cooling).
- Kill drafts. Keep the printer away from open windows, doors and AC vents; a cold breeze across the plate cools one side of the print unevenly.
- For ABS/ASA: use no part cooling on the first
5layers and 30–40 % max fan — over-cooling is what pops these materials off the plate. On enclosed printers, preheat the chamber; on open printers (P1P, A1), ABS and ASA are honestly a lost cause — see our warping guide. - Glue for PA and PC is practically required — both for grip and so the part doesn’t damage the plate coating on removal.
If it still fails
Adhesion problems compound, so run the checklist in order rather than in parallel: wash the plate, confirm the plate/material pairing is supported, set the material’s bed temperature, add the brim, slow the first layer. If a print still releases after all five, look at where it failed. Only the corners lifting while the centre held is warping, not adhesion — switch to the warping guide, where cooling and chamber heat take over. Patches that never stuck in the first place point back at the first layer: leveling, nozzle cleanliness and first-layer temperatures.
One habit prevents most repeat failures: wash the plate with soap whenever prints start releasing again, and re-run the printer’s calibration whenever you swap plates. Those two rituals cost five minutes and remove the two most common variables.
Frequently asked questions
Why did my prints suddenly stop sticking to the plate?
The cause is almost always one of three things, in this order: a greasy plate, the wrong plate for the material, or the wrong bed temperature. Finger grease is the number one adhesion killer — wash the plate with dish soap and warm water, since an IPA wipe mostly redistributes grease instead of removing it, and handle the plate by its edges afterwards.
What bed temperature should I use for each material?
On a textured PEI plate use roughly: PLA 55–65 °C, PETG 70–85 °C (it grips best around 80–85), ABS 90–100 °C, ASA 100 °C, PA 100–105 °C and PC 110 °C. Also slow the first layer from Bambu’s default 50 mm/s down to 20 mm/s, and add an 8 mm outer brim if parts with small footprints keep releasing.
How do I know if it’s an adhesion problem or warping?
Look at where the print failed. Only the corners lifting while the centre stayed stuck is warping — a thermal and cooling problem, not adhesion. Patches that never stuck in the first place point to the first layer: levelling, nozzle cleanliness and first-layer temperatures. A part that releases entirely mid-print after passing those checks is a true adhesion failure: wash the plate, then check the plate/material pairing and bed temperature.
Print keeps popping off the plate?
Answer five quick questions about your printer, filament and build plate, and our rule engine turns them into a prioritized fix list with exact slicer values — the same knowledge these guides are written from.
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- First Layer Not Sticking: Causes and Solutions — Bambu Lab Wiki
- Inconsistent adhesion on plate: Causes and Solutions — Bambu Lab Wiki
- Introduction to Bambu Lab Build Plates — Bambu Lab Wiki