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

Start at 245°C for the hotend and 80°C for the bed, then run a temperature tower across 235–260°C to dial in your exact filament brand.

What print speed works for PETG HF on this printer?

Around 126 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 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 HF on the Elegoo Neptune 4 Max?

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

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PETG HF settings for the Elegoo Neptune 4 Max

Great match

⚡ Quick answer: Print PETG HF on the Elegoo Neptune 4 Max at 245°C hotend, 80°C bed, 126 mm/s, 50% part-cooling fan and 1 mm retraction. Run a temperature tower to fine-tune your exact spool.

These are tuned starting settings for printing PETG HF 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 245°C and the bed to 80°C. High-flow PETG is tuned for faster printing on modern high-speed machines.

245°C

Hotend

80°C

Bed

126 mm/s

Speed

50%

Part fan

Recommended PETG HF profile

Hotend temperature	245°C (tower 235–260°C)
Bed temperature	80°C
Print speed	126 mm/s
Retraction	1 mm (direct drive)
Part cooling fan	50%
Bed adhesion	Glue stick as a release agent.
Nozzle	Brass 0.4 mm
Difficulty	Intermediate

💡 Best uses for PETG HF: fast functional prints.

Shop PETG HF on Amazon →

Troubleshooting PETG HF on the Elegoo Neptune 4 Max

Problem	Fix
Stringing or fine hairs	Dry PETG HF before printing, drop the hotend a few degrees below 245°C, and raise retraction toward 1.4 mm. Damp filament is the No. 1 cause of stringing.
Poor first-layer adhesion	Glue stick as a release agent. 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 mm. Keep the part-cooling fan low so layers bond and warping stays down.

FAQ

What temperature should I print PETG HF on the Elegoo Neptune 4 Max?: Start at 245°C for the hotend and 80°C for the bed, then run a temperature tower across 235–260°C to dial in your exact filament brand.
What print speed works for PETG HF on this printer?: Around 126 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 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 HF on the Elegoo Neptune 4 Max?: No, PETG HF 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.