The Foundation of Every Great FDM Print: First Layer Adhesion
Ask any experienced 3D printing enthusiast what causes the most failed prints, and the answer is almost always: poor first layer adhesion. A successful FDM print depends on the filament sticking firmly to the build plate during the critical first few layers. In this guide, we'll cover everything you need to know about achieving perfect bed adhesion.
Build Plate Surface Options
| Surface Type | PLA | PETG | ABS | TPU |
|---|---|---|---|---|
| PEI Smooth | ✅ Excellent | ⚠️ Use glue stick | ✅ Good | ✅ Good |
| PEI Textured | ✅ Excellent | ✅ Good | ✅ Good | ✅ Excellent |
| Glass + Glue | ✅ Good | ✅ Good | ⚠️ Needs enclosure | ✅ Good |
| Garolite/G10 | ✅ Excellent | ✅ Excellent | ✅ Good | ✅ Good |
ANTINSKY offers Cold PEI Build Plates specifically designed for Bambu Lab printers, and PEI Smooth Build Plates for premium surface finish.
Z-Offset Calibration: The Most Critical Step
Getting the nozzle-to-bed distance right is essential:
- Too high: Filament doesn't squish onto the bed — poor adhesion, stringy first layer
- Too low: Filament is squished too thin — rough surface, nozzle scraping, clog risk
- Just right: Filament is pressed into a flat, uniform ribbon with a slight squeeze on the sides
Most modern printers (Bambu Lab, Creality K-series, Prusa MK4) have automatic bed leveling, but you should still verify first layer quality with a simple first layer test print (a single-layer square or grid).
Bed Temperature Settings by Material
| Material | Bed Temp (First Layer) | Bed Temp (Subsequent) | Enclosure Needed? |
|---|---|---|---|
| PLA+ | 60–65°C | 55–60°C | No |
| PETG | 75–85°C | 70–80°C | No |
| ABS | 100–110°C | 95–105°C | ✅ Yes |
| TPU | 40–60°C | 40–50°C | No |
Adhesion Aids and Best Practices
PLA
- A clean PEI sheet is usually enough
- For stubborn adhesion, use a thin layer of glue stick or hairspray
- Isopropyl alcohol (≥90%) cleaning between prints
PETG
- Critical: Always use a release agent (glue stick) on PEI — PETG can bond permanently to bare PEI
- Lower first layer speed (20–30mm/s) helps
- If using glass, allow the bed to cool completely before removing the print
ABS
- Requires a heated enclosure to prevent warping
- Use ABS slurry (ABS dissolved in acetone) for excellent adhesion
- High bed temperature (100–110°C) is mandatory
TPU
- Use a low bed temperature (40–60°C) — TPU is flexible and releases easily
- Textured PEI works best
- Slow first layer speed (10–15mm/s)
Troubleshooting Common Adhesion Problems
Print Warps at Corners
- Increase bed temperature by 5°C
- Use a brim (5–10mm wide)
- Check for drafts — use an enclosure or draft shield
Print Detaches Mid-Print
- Clean the build plate thoroughly with warm water and dish soap
- Ensure bed is properly leveled
- First layer height should be ~0.20mm for a 0.4mm nozzle
First Layer Has Gaps
- Nozzle is too far from bed — reduce Z-offset by 0.02–0.05mm
- Increase first layer flow rate to 105–110%
- Check that filament diameter is within spec (±0.03mm)
Recommended FDM Materials from InnoStation 3D
For the best printing experience, start with quality materials. InnoStation 3D stocks the full range of ANTINSKY filaments including PLA+, PETG, ABS, and TPU — all with tight diameter tolerances and vacuum-sealed packaging.