Why is my 3D print first layer not sticking?

The most common causes of first-layer adhesion failure are: (1) Z-offset too high — the nozzle is too far from the bed, so the filament is not being pressed onto the surface; (2) bed temperature too low for the material — PLA needs 60°C, PETG 70–85°C, ABS 100–110°C; (3) dirty bed surface — oils from hands prevent adhesion, clean with IPA; (4) wrong bed surface for the material — PETG on smooth PEI either doesn't stick or bonds too hard, textured PEI is better.

How do I fix elephant foot on 3D prints?

Elephant foot (a flared, squished first layer wider than the rest of the print) is caused by the nozzle being too close to the bed, compressing the first layer outward. Fix it by raising the Z-offset by 0.025–0.05 mm at a time until the first layer looks flat but not over-squished. Also check that the first-layer flow rate in your slicer is not set above 100%. Some printers add an "elephant foot compensation" setting in the slicer — this trims the outer edge of the first layer slightly to counteract the effect.

What bed temperature should I use for the first layer?

Standard first-layer bed temperatures: PLA: 60°C (some brands: 55–65°C). PLA+: 60–70°C. PETG: 70–85°C. ABS: 100–110°C. ASA: 100–110°C. Nylon: 60–80°C. TPU: 40–60°C. Run the bed at the same temperature for the entire print — lowering bed temp after the first layer is not recommended as it can cause adhesion failure mid-print. Use the higher end of the range if the first layer lifts; use the lower end if parts are hard to remove.

Should I use a brim for the first layer?

Use a brim (3–5 mm) for: ABS and ASA (almost always, to prevent corner warping), large flat parts with small footprints, models with thin legs or small contact areas, and any material you are printing for the first time. Skip a brim for: small parts that fully contact the bed, flexible filaments (TPU brims are hard to remove), and parts where any extra adhesion would make removal difficult. A raft is a stronger option than a brim for very small contact areas, but takes more material and time.

How do I get a perfect first layer every time?

The sequence: (1) Clean the bed with IPA before every print — oils from hands are the most common hidden cause of adhesion failure. (2) Run bed mesh leveling regularly — especially for printers without automatic leveling, once a week if printing daily. (3) Use live Z-adjust during the first layer of a print to fine-tune Z-offset. (4) Set the first-layer speed to 25–30 mm/s — a slower first layer gives better adhesion regardless of other settings. (5) Verify bed temperature before printing — PLA at 55°C will often not stick on a smooth PEI surface.

3D Printing First Layer: Troubleshooting Guide

The first layer is the foundation of every 3D print. If it fails — doesn't stick, warps, or prints unevenly — the rest of the print is compromised. This guide covers every common first-layer problem, its cause, and the exact fix.

Quick first-layer checklist

Clean the bed with IPA — oils from hands are the most common hidden cause
Verify bed temperature — PLA: 60°C, PETG: 70–85°C, ABS: 100–110°C
Check Z-offset — the nozzle should visibly press the filament flat on the bed surface
Slow down the first layer — 25–30 mm/s gives better adhesion than 50 mm/s
Disable cooling fan for first 2–3 layers — sudden cooling causes warping

Problem diagnosis

First layer not sticking at all: Cause: Z-offset too high, bed temp too low, dirty bed surface, wrong bed surface for material
Fix: Lower Z-offset by 0.05 mm at a time. Clean bed with IPA. Verify bed temperature matches material. Use correct surface (PEI for PLA/PETG, garolite for Nylon).
First layer too squished (elephant foot): Cause: Z-offset too low, excessive bed temp, first-layer extrusion too high
Fix: Raise Z-offset by 0.025–0.05 mm. Reduce bed temp by 5°C. Check first-layer height setting in slicer (should be ~0.2 mm for a 0.4 mm nozzle).
Gaps between first-layer lines: Cause: Z-offset too high, flow rate too low, nozzle clogged
Fix: Lower Z-offset. Verify flow rate calibration. If lines look stringy or underextruded, check for a partial clog.
Corners lifting / warping: Cause: Bed temp too low, no enclosure for ABS, wrong bed surface, cooling fan on too early
Fix: Increase bed temp by 5°C. Add a brim (3–5 mm). Disable cooling fan for first 2–3 layers. For ABS: use an enclosure.
First layer uneven / some spots too low: Cause: Warped bed, manual leveling off, failed mesh leveling run
Fix: Run bed mesh leveling (G29 or via printer UI). Check if the bed itself is warped — place a straight edge across it. Some beds need re-leveling after heat cycling.
First layer prints fine but pops off after cooling: Cause: Bed temp too low, bed surface not suitable for material, printed on wrong side of PEI
Fix: For PLA: use smooth PEI at 60°C — parts should pop off when cold. For PETG: textured PEI at 70–80°C. If parts stick too hard: raise bed temp then lower it; thermal expansion helps release.
Lines too wide / over-extruded on first layer: Cause: First-layer flow rate too high (>120% is common default), nozzle too close
Fix: Set first-layer flow rate to 100%. Lower Z-offset slightly. First-layer line width can be set independently in most slicers — reduce from 150% to 100–110%.

Z-offset: the most important setting

Z-offset is the distance between the nozzle tip and the bed surface at the home position. Getting this right is more important than any other first-layer setting.

Too high: filament is deposited in a round bead, doesn't bond to the bed. Lines have gaps between them. Print pops off the bed easily — often mid-print.

Too low: filament is over-squished, spreads outside the intended line width. The first layer looks wider than expected. Nozzle may drag through material (clunking sound). Parts have elephant foot.

Correct: lines are flat, slightly wider than round, with no visible gap between adjacent lines. The first layer looks like a smooth flat surface from the side.

How to adjust live: In OrcaSlicer, PrusaSlicer, and Bambu Studio, you can adjust Z-offset while a print is running. Start a print, watch the first layer, and use the live Z adjustment in 0.025 mm steps. Write down the value when it looks correct and save it.

Bed surfaces by material

Surface	Best materials	Temperature	Release	Notes
Smooth PEI (spring steel)	PLA, PLA+	PLA: 60°C	Pop off when cold	Most common. PETG can bond too hard — use textured PEI for PETG.
Textured PEI (spring steel)	PETG, ABS, ASA, PLA+	PETG: 70–85°C	Pop off when cold	Better release for PETG. Gives a textured bottom surface finish.
Glass (plain or coated)	PLA, ABS	PLA: 60°C, ABS: 110°C	Remove from printer when cold	Very flat. ABS: add hairspray or glue stick. PLA releases cleanly when cold.
Garolite / G10	Nylon	60–80°C	Moderate when cold	Best surface for Nylon adhesion. Nylon will not stick reliably on PEI.
BuildTak / similar	PLA, ABS	PLA: 55°C	Manual lift	Good initial adhesion but wears after many prints. Replace when prints stop sticking.

PETG first layer: special rules

PETG bonds more strongly to bed surfaces than PLA, which creates two opposite problems: it may not stick at all on smooth PEI (insufficient adhesion) OR it sticks so hard it tears the surface off (too much adhesion). The correct bed surface solves both:

Use textured PEI at 70–80°C — PETG releases cleanly when cold
Avoid smooth PEI — PETG often bonds too strongly and damages it
If using glass: apply a thin layer of glue stick (releases cleanly when dry)
First-layer speed: 25–30 mm/s (slower than PLA)
No cooling fan on first 2–3 layers

ABS first layer: warping prevention

ABS warps at the corners during cooling because it shrinks significantly as it cools from ~240°C to room temperature. Prevention requires:

Enclosure — required; drafts cause immediate warping
Bed temp 100–110°C — keeps the bottom layer warm during the print
Brim (5–8 mm) — adds surface area at the corners to resist lifting
No cooling fan — zero fan for the entire ABS print
Bed surface — glass with hairspray, garolite, or PEI with 110°C

Find settings for your printer

Full calibration guide →Bed adhesion guide →Settings by printer →