When an FDM print lifts or slides, begin with the build sheet and first layer rather than changing every slicer setting at once. Clean the surface using the sheet maker's approved method, confirm the sheet is seated and the first layer is calibrated, then use the material and temperature profile recommended for that filament and surface. Make one change at a time and consult the printer and sheet instructions before applying adhesives or solvents.
For a print that will not stick, start with the build surface and the first layer. Clean the sheet by its manufacturer’s method, check first-layer calibration, and use a material profile intended for your filament and surface before experimenting with other settings.
Diagnose the failure pattern
| What you see | First checks |
|---|---|
| First line does not stay down | Sheet is clean and seated; first-layer height and calibration are correct |
| Corners curl during the print | Material profile, surface preparation, bed temperature and room conditions match the printer and filament guidance |
| Print sticks but is difficult to remove | Cooling and removal instructions for the sheet and filament; avoid prying in a way that can damage the surface |
| Adhesion changes between prints | Fingerprints, residue, sheet wear, nozzle condition and whether settings changed between jobs |
Prusa’s troubleshooting guide emphasizes matching the fix to the sheet and filament, including a clean surface and correct first-layer calibration. The exact cleaning product and preparation method vary by build sheet. A smooth sheet, textured sheet and specialty surface may have different rules, so do not copy solvent or adhesive advice from a different model.
Work through one variable at a time
- Let the bed cool if needed, remove the sheet according to the manual and inspect it for residue or damage.
- Clean it using the sheet manufacturer’s approved method. Avoid unapproved solvents, abrasives or scraping tools.
- Check that the plate sits flat and is secured as intended.
- Run the printer’s first-layer calibration procedure. Look for a continuous line that is neither rounded and loose nor scraped thin.
- Select the correct filament profile and sheet type in the slicer. Confirm the nozzle and bed temperatures are within the filament and machine instructions.
- Print a small first-layer test and change only one setting at a time.
Avoid adding a brim, raft, glue or hairspray until you understand whether the printer and sheet permit it. Added adhesion aids can make a print harder to remove or affect the plate. Replace a damaged or worn sheet when its maker says it is no longer usable.
For filament-specific handling, see our 3D printer filament guide. The FDM versus resin printer guide explains which printer type uses a build plate. Browse the 3D printing category.
Official reference
Common questions
Why does my 3D print lift from the bed?
Common checks include build-sheet cleanliness, first-layer calibration, sheet preparation and the material profile. The right fix depends on the filament and surface, so follow their specific instructions.
Can I use glue stick on every 3D printer sheet?
No. Bed sheets differ, and an adhesive that helps one material or surface may be unsuitable for another. Check the printer and sheet maker's instructions before applying anything.
Should I change the bed temperature to fix adhesion?
Use the temperature range specified for your filament, printer and build surface. Change one setting at a time and record the result so you can identify what helped.