What temperature should I print PETG on the Elegoo Neptune 4 Max?

Start at 240°C for the hotend and 80°C for the bed, then run a temperature tower across 230–255°C to dial in your exact filament brand.

What print speed works for PETG on this printer?

Around 90 mm/s is a safe starting point on the Elegoo Neptune 4 Max. It can go faster once the profile is tuned, but start conservative for clean walls.

What retraction should I use?

Use about 1.2 mm of retraction (direct drive needs very little). If you see stringing, raise retraction speed before distance and dry the filament.

Do I need an enclosure for PETG on the Elegoo Neptune 4 Max?

No, PETG prints fine in the open on the Elegoo Neptune 4 Max.

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PETG settings for the Elegoo Neptune 4 Max

Great match

⚡ Quick answer: Print PETG on the Elegoo Neptune 4 Max at 240°C hotend, 80°C bed, 90 mm/s, 50% part-cooling fan and 1.2 mm retraction. Run a temperature tower to fine-tune your exact spool.

These are tuned starting settings for printing PETG on the Elegoo Neptune 4 Max. The Elegoo Neptune 4 Max has a direct-drive extruder with an all-metal hotend, so we set the hotend to 240°C and the bed to 80°C. PETG is stronger and more temperature-resistant than PLA while still fairly easy to print.

240°C

Hotend

80°C

Bed

90 mm/s

Speed

50%

Part fan

Recommended PETG profile

Hotend temperature	240°C (tower 230–255°C)
Bed temperature	80°C
Print speed	90 mm/s
Retraction	1.2 mm (direct drive)
Part cooling fan	50%
Bed adhesion	Use glue stick as a release agent to avoid over-adhesion.
Nozzle	Brass 0.4 mm
Difficulty	Intermediate

💡 Best uses for PETG: mechanical parts, waterproof and outdoor-ish prints.

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Troubleshooting PETG on the Elegoo Neptune 4 Max

Problem	Fix
Stringing or fine hairs	Dry PETG before printing, drop the hotend a few degrees below 240°C, and raise retraction toward 1.6 mm. Damp filament is the No. 1 cause of stringing.
Poor first-layer adhesion	Use glue stick as a release agent to avoid over-adhesion. Re-level the bed, set a slightly squished first layer, and wipe the sheet with IPA so it is grease-free.
Blobs, zits or rough walls	Slow the outer wall, enable coasting/wipe, and keep retraction near 1.2 mm. Keep the part-cooling fan low so layers bond and warping stays down.

FAQ

What temperature should I print PETG on the Elegoo Neptune 4 Max?: Start at 240°C for the hotend and 80°C for the bed, then run a temperature tower across 230–255°C to dial in your exact filament brand.
What print speed works for PETG on this printer?: Around 90 mm/s is a safe starting point on the Elegoo Neptune 4 Max. It can go faster once the profile is tuned, but start conservative for clean walls.
What retraction should I use?: Use about 1.2 mm of retraction (direct drive needs very little). If you see stringing, raise retraction speed before distance and dry the filament.
Do I need an enclosure for PETG on the Elegoo Neptune 4 Max?: No, PETG prints fine in the open on the Elegoo Neptune 4 Max.

Sources & how we tuned this

These settings are community-tested starting points, cross-checked against manufacturer guidance and trusted material references:

Last verified: 2026-07-17. Always run a temperature tower and a small calibration print for your exact spool.