Bed adhesion is the single most common source of failed first layers. Surface material, temperature and a clean plate decide whether a print sticks, lifts or warps. This guide compares the main build-plate surfaces and shows how to keep them reliable.
Surface Types Compared
| Surface | Strength | Weakness | Best For |
|---|---|---|---|
| Cold PEI plate | Easy release, no heat needed | Wear over time | PLA/PETG cold-first-layer |
| Textured PEI | Great grip, low warp | Fine texture on base | PETG, TPU |
| Smooth glass | Mirror finish | Sticks hard, needs glue | PLA mirrors |
| Magnetic flex plate | Quick part removal | Can wear magnets | Everyday prints |
Cold PEI: the foolproof first-choice
A cold PEI (polyetherimide) build plate grips many filaments at lower temperatures, so parts release with a gentle flex instead of a pry-bar fight. It is a favorite upgrade for Bambu Lab machines. Check out the ANTINSKY Cold PEI Build Plate to keep prints stuck without high heat.
When to Heat the Bed
- PLA/PLA+ – works cold-pei at ~35–40 °C, or up to warmth for long parts.
- PETG – 60–80 °C; textured/cold-pei avoids over-sticking.
- ABS – 90–110 °C with an enclosed chamber to stop warping.
- TPU – 30–50 °C; textured plate helps flexible parts release.
Keep the Surface in Shape
- Clean with isopropyl alcohol between prints—oils from your hands are the #1 adhesion killer.
- Use a dedicated scraper or gentle flex; never gouge the coating with metal tools.
- Re-surface occasionally with a light abrasive if prints stop sticking.
- Replace a PEI plate when it shows deep scratches or the coating peels.
Supporting Accessories
Great first layers also depend on clean extrusion and dry material. Put together a reliable toolkit:
- ANTINSKY Tungsten Nozzle – hold temperature for glossy, warp-free bases.
- ANTINSKY FilaBox Drying Box – keep flexible and hygroscopic spools dry.
- ANTINSKY FDC12 Dryer Cabinet – professional drying and sealed storage for a whole color set.
Quick Adhesion Check
- Clean plate with alcohol → re-test.
- Raise bed temperature inside its material range.
- Add a brim for tall or small parts.
- Confirm the first layer is ~0.2 mm thick and even.
Conclusion
Adhesion starts at the surface. Choose the right plate for your material, keep it clean, and pair it with dry filament and clean nozzles—your first layer will stick, and the rest of the print will follow.