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The Beginner's First Print Checklist: Everything to Do Before You Hit Print on a New FDM Printer

The Beginner's First Print Checklist: Everything to Do Before You Hit Print on a New FDM Printer

Most failed first prints have the same cause — skipping setup steps that take 20 minutes but save hours of troubleshooting. This checklist covers every step in order, specific to current FDM printers including the ELEGOO Neptune 4 series.

In Summary

Before your first real print: unbox and physically inspect the printer, level the bed or run auto levelling calibration, set the Z-offset correctly, load filament and purge until clean, print a small first-layer test, then print a calibration cube. On the ELEGOO Neptune 4 series, auto bed levelling handles most of this automatically — but Z-offset still needs manual fine-tuning. Get the first layer right and 90% of common beginner failures disappear. Visit our Somerset West showroom if you want a guided first-print session in person.

Last updated: September 2026

Why does first-time setup matter so much in FDM printing?

FDM printing builds objects layer by layer, with each layer bonding to the one beneath it. The very first layer — the one that sticks to the print bed — determines everything that follows. If the first layer doesn't adhere correctly, the print fails, often catastrophically: a partially printed object detaches mid-print, strings of filament spaghetti across the bed, or the nozzle drags through earlier layers and causes clogs.

Getting the first layer right is almost entirely about setup, not luck. A printer that is correctly configured produces successful first layers consistently. A printer that hasn't been set up properly will fail at the first layer on almost every print until the underlying setup issue is resolved.

The good news: setup takes 20–30 minutes on a first run, and most of it never needs repeating. The ELEGOO Neptune 4 series simplifies this significantly with automatic bed levelling — but there are still manual steps that automatic levelling doesn't handle.

The complete first-print checklist — work through these in order

🔧 Step 1 — Unboxing and physical assembly

Remove all packaging material from inside the printer
Foam inserts, cable ties, and protective films on the bed are present to prevent shipping damage and must be removed before first use. Check under the bed and around the extruder assembly.

Tighten any loose gantry bolts or frame connections
Printers ship assembled but not always tightened fully. A loose gantry connection causes layer shifting and inconsistent prints. Check all visible fasteners before powering on.

Confirm the belt tension on both X and Y axes
Belts should be taut — when plucked like a guitar string, they should produce a clear tone, not a dull thud. Loose belts cause ghosting and layer misalignment.
📐 Step 2 — Bed levelling and Z-offset calibration

Run automatic bed levelling if available (Neptune 4 series)
The Neptune 4 Pro, Plus, and Max all include automatic bed levelling via a CR Touch or BLTouch probe. Navigate to the levelling function in the printer menu and run it — it probes 25+ points across the bed and creates a mesh compensation map. This takes approximately 3–4 minutes and only needs repeating if the printer is moved or the bed is adjusted.

Fine-tune Z-offset manually — this is not handled automatically
Z-offset is the gap between the nozzle and the bed at its lowest point. Auto levelling compensates for bed tilt but does not set this gap. Navigate to Z-offset in the printer menu and adjust while printing a first-layer square: the filament should be slightly squished into the bed, producing a flat ribbon with no gaps and no dragging. Increase offset if the nozzle is too close; decrease if too far.

Clean the bed surface with IPA before calibration and every few prints
Finger oils and residue from previous prints reduce bed adhesion. A quick wipe with 99% isopropyl alcohol (IPA) restores the surface. Don't touch the bed surface after cleaning.
🧵 Step 3 — Filament loading

Heat the nozzle to the correct temperature for your filament before loading
PLA: 200–220°C. PETG: 230–250°C. Never try to feed filament through a cold nozzle — it won't advance and can damage the extruder gears. Heat first, then feed.

Cut the filament end at a clean 45° angle before loading
A clean angled cut prevents the filament tip from catching on the entry to the Bowden tube or direct drive extruder during feeding.

Purge filament until the extrusion colour is clean and consistent
When loading new filament over old (especially a different colour), purge until the new colour extrudes cleanly with no contamination from the previous filament. This prevents colour bleed and inconsistent first layers.
🌡️ Step 4 — Temperature settings

Check the filament packaging for the recommended temperature range
Different filament brands run at slightly different temperatures even within the same material type. The packaging temperature range is the starting point. For PLA, 200–220°C nozzle and 55–65°C bed covers most brands.

Set bed temperature and allow it to reach target before starting
Starting a print before the bed has reached target temperature reduces first-layer adhesion. Most slicers handle this automatically — confirm the start G-code includes a bed preheat wait command.
🖨️ Step 5 — Test prints before committing to a long job

Print a first-layer adhesion test — a single-layer square, 100×100mm
This is the fastest way to confirm your Z-offset and bed levelling before committing to a multi-hour print. The layer should be smooth, slightly squished, uniformly adhered, and show no gaps. If any corner is lifting, the bed needs further levelling in that area.

Print a calibration cube — 20×20×20mm
A calibration cube confirms dimensional accuracy, layer consistency, and that the X/Y/Z axis movements are correct. Measure the finished cube with calipers: a correctly configured printer produces a cube that measures 20mm on each axis within ±0.2mm.

Print the sample file from the SD card if available
ELEGOO printers include a pre-sliced sample print on the SD card. This is already optimised for the printer and confirms that the machine itself is functioning correctly before any slicer settings are involved.

Never leave a first print completely unattended. Check back every 10–15 minutes during the first print. If the print detaches from the bed or something goes wrong, catching it early saves filament, time, and in some cases the nozzle. Once you've confirmed the setup is correct and the printer is running reliably, longer unattended prints are fine.

Frequently asked questions for first-time FDM printer users

Q: What should I do first when setting up a new FDM 3D printer? A: The first step is bed calibration — either manually using the paper method or automatically if your printer has auto bed levelling. A correctly calibrated first layer is the single most important factor in whether a print succeeds. After bed calibration, load filament, and print a small test object before committing to a longer print.

Q: What is a first layer test and why does it matter? A: A first layer test is a flat, single-layer print that verifies bed levelling and Z-offset. If the first layer is too far from the bed, filament doesn't adhere and the print fails immediately. If it's too close, the nozzle drags and causes clogs. A successful first layer test — smooth, slightly squished, fully adhered — is the green light to proceed with longer prints.

Q: What temperature should I print PLA at on an ELEGOO Neptune 4? A: PLA on the ELEGOO Neptune 4 series prints well at 200–220°C nozzle temperature and 55–65°C bed temperature. Start at 210°C nozzle and 60°C bed as a baseline, then adjust based on the specific filament brand's recommended range on the packaging.

Q: What is the best first print for a beginner on a new 3D printer? A: The best first prints are small, flat, and quick — a first-layer adhesion test square, a 20mm calibration cube, or the sample file pre-loaded on the printer's SD card. These prints are short enough to abandon if something goes wrong and confirm the printer's settings are correct before longer jobs.

Just got a new ELEGOO printer and want a guided first-print session? Visit our Somerset West showroom — we run the Neptune 4 range in-store and can walk you through setup and your first print in person.

Shop ELEGOO Range → Call 021 840 0433
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