Ultimaker Cleaning Filament in 2.85mm diameter is a genuine Ultimaker maintenance material designed to clean residue, burnt polymer and contamination from the hot end when switching between materials or after a print failure. The cleaning filament works by binding to and mechanically scrubbing out residue from the nozzle and melt zone as it is purged through the hot end, leaving the filament path clean and ready for a fresh material load.

Regular use of cleaning filament between material changes is particularly important when switching from high-temperature or abrasive materials back to more sensitive ones, or when transitioning between colours where contamination would be visible in the print. Ultimaker Cura includes an automated cleaning routine for S-series printers that uses this cleaning filament, making the maintenance process fast and systematic. Consistent hot end cleaning significantly extends nozzle life and prevents the build-up of degraded material that can cause clogs and surface defects.

Key features

• Genuine Ultimaker cleaning filament formulated to bind and remove residue, burnt polymer and contamination from the hot end melt zone.
• 2.85mm diameter for direct compatibility with Ultimaker 2+, UM3, S3 and S5 hot ends.
• Recommended for use between material changes, especially when switching from abrasive, high-temperature or dark-coloured materials to sensitive or light-coloured ones.
• Compatible with Ultimaker Cura's automated cleaning routines on S-series printers for fast, systematic hot end maintenance.
• Regular use prevents the build-up of degraded material that causes nozzle clogs, under-extrusion and surface contamination.
• Extends hot end and nozzle service life by keeping the melt zone clear of carbonised deposits.

Compatible with: Ultimaker 2+, Ultimaker 3, Ultimaker S3, Ultimaker S5