Repair workspace

Colour Contamination Between Multi-Colour Filaments

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Increase purge only where needed, use suitable transition order, clean the nozzle, and separate heavily contrasting or translucent materials with a tuned purge tower or sacrificial object.

Multi-MaterialEasy12 min

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Ordered repair sequence

Step 1

Confirm the nozzle and hotend are clean and suitable for the materials.

Step 2

Print a transition test for the actual colour pairs.

Step 3

Increase purge volume only for the worst transitions.

Step 4

Use a purge tower, purge object, or infill purge where supported.

Step 5

Sequence colours from light to dark when design allows.

Step 6

Avoid mixing materially incompatible filaments in one hotend.

Step 7

Reduce excessive temperature that increases oozing and mixing.

Step 8

Verify the final object has no contamination in critical visible areas.

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