The Ultimaker Print Core AA 0.25mm is a genuine OEM print core for the AA print head position on the Ultimaker 3, S3 and S5. The AA print core type is designed for build materials, and the 0.25mm nozzle diameter provides the highest print resolution in the standard Ultimaker print core range. This print core is the choice for applications demanding the finest surface detail, smallest feature reproduction and most refined surface finish that FDM printing on the Ultimaker platform can achieve.

While print speeds are lower at 0.25mm than with larger nozzles, the resulting prints exhibit a near-smooth surface, razor-sharp edges and precise small-scale details that are not achievable with the standard 0.4mm or larger print cores. Common applications include detailed prototypes, architectural models, fine jewellery mockups, intricate mechanical parts and any print where surface finish and dimensional accuracy are the primary criteria. The print core is NFC-tagged and fully integrated with Ultimaker Cura for automatic recognition and validated print profiles.

Key features

• Genuine OEM Ultimaker Print Core AA in 0.25mm diameter, delivering the finest standard print resolution in the Ultimaker UM3/S3/S5 ecosystem.
• Produces near-smooth surface finish, sharp edges and precise small-scale features that larger print cores cannot achieve.
• Validated Ultimaker Cura profiles for consistent, high-quality results across supported build materials without manual tuning.
• NFC-tagged for automatic print core recognition and profile loading on S-series printers with the Material Station.
• Ideal for detailed prototypes, architectural models, jewellery mockups and parts where surface quality is paramount.
• Compatible with all standard AA build materials: PLA, ABS, CPE, PETG, Nylon, Tough PLA and composite variants.

Compatible with: Ultimaker 3, Ultimaker S3, Ultimaker S5 (AA print head position)