What temperature for ASA on the Neptune 4 Ultra?

Recommended nozzle temperature for ASA on the Neptune 4 Ultra is 250°C (range: 240–265°C). Bed temperature: 95°C.

What bed temperature for ASA on the Neptune 4 Ultra?

Set the Neptune 4 Ultra bed to 95°C for ASA. The acceptable range is 90–105°C.

What retraction settings for ASA on the Neptune 4 Ultra?

Use 0.5 mm retraction distance at 35 mm/s for ASA on the Neptune 4 Ultra.

What fan speed for ASA on the Neptune 4 Ultra?

Set the part-cooling fan to 20% for ASA on the Neptune 4 Ultra. Minimum speed: 0%.

Neptune 4 UltraASA settings

Slicer settings for printing ASA filament on the Neptune 4 Ultra. Nozzle temperature, bed temperature, fan speed, retraction, and print speed — sourced from official slicer profiles.

Nozzle temp250°C240–265°C range

Bed temp95°C90–105°C range

Fan speed20%Min 0%

Print speed40 mm/sStarting point

Retraction0.5 mmAt 35 mm/s

Nozzle0.4 mmbrass

Source: Derived. Based on manufacturer specifications.

All nozzle sizes

0.4 mm nozzle

Filament	Nozzle temp	Bed temp	Fan	Speed	Retraction	Source
ASA Generic	250°C 240–265°C	95°C 90–105°C	20% /0%	40 mm/s	0.5 mm @ 35 mm/s	Derived

Tips for printing ASA on the Neptune 4 Ultra

ASA warps significantly without an enclosure — this printer is open-frame; use a draft shield or enclosure accessory.
Minimize fan cooling — high fan speeds cause layer cracking in ASA.
Increase bed temperature gradually if warping occurs: try 105–110°C.
ASA is UV-resistant and suitable for outdoor parts.

Recommended settings (0.4 mm brass nozzle)

All nozzle sizes

0.4 mm nozzle

Tips for printing ASA on the Neptune 4 Ultra