UltiMaker print core AA S7/S5/S3/3
The original print core AA is a replaceable print head that has been specifically developed for Ultimaker printers series 3 and above. AA cores feature a specially developed internal geometry that is suitable for all standard filaments, though not for PVA or abrasive filaments. PVA in this extruder will result in irreparable blockages and should be printed using the BB core specifically designed for this purpose. The CC core is available for abrasive materials.