What temperature should I print PVB on the Elegoo Neptune 4?

Start at 215°C for the hotend and 70°C for the bed, then run a temperature tower across 205–230°C to dial in your exact filament brand.

What print speed works for PVB on this printer?

Around 102 mm/s is a safe starting point on the Elegoo Neptune 4. 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 PVB on the Elegoo Neptune 4?

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

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PVB settings for the Elegoo Neptune 4

Great match

⚡ Quick answer: Print PVB on the Elegoo Neptune 4 at 215°C hotend, 70°C bed, 102 mm/s, 60% part-cooling fan and 1 mm retraction. Run a temperature tower to fine-tune your exact spool.

These are tuned starting settings for printing PVB on the Elegoo Neptune 4. The Elegoo Neptune 4 has a direct-drive extruder with an all-metal hotend, so we set the hotend to 215°C and the bed to 70°C. PVB can be vapor-smoothed with IPA for a glossy, injection-molded look.

215°C

Hotend

70°C

Bed

102 mm/s

Speed

60%

Part fan

Recommended PVB profile

Hotend temperature	215°C (tower 205–230°C)
Bed temperature	70°C
Print speed	102 mm/s
Retraction	1 mm (direct drive)
Part cooling fan	60%
Bed adhesion	Use glue stick on the heated bed.
Nozzle	Brass 0.4 mm
Difficulty	Intermediate

💡 Best uses for PVB: smoothable display parts (IPA vapor).

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Troubleshooting PVB on the Elegoo Neptune 4

Problem	Fix
Stringing or fine hairs	Dry PVB before printing, drop the hotend a few degrees below 215°C, and raise retraction toward 1.4 mm. Damp filament is the No. 1 cause of stringing.
Poor first-layer adhesion	Use glue stick on the heated bed. 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 PVB on the Elegoo Neptune 4?: Start at 215°C for the hotend and 70°C for the bed, then run a temperature tower across 205–230°C to dial in your exact filament brand.
What print speed works for PVB on this printer?: Around 102 mm/s is a safe starting point on the Elegoo Neptune 4. 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 PVB on the Elegoo Neptune 4?: No, PVB prints fine in the open on the Elegoo Neptune 4.

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.