Paint-on features in the online slicer: supports, seams, colors, and fuzzy skin

Paint-on features in the online slicer

Paint-on tools let you mark specific areas of a model instead of applying one setting to the whole object. In the Cloud Slicer, painting is used for color, support, seam, and fuzzy skin workflows.

This article is the overview. Use the linked guides below when you need exact steps for a specific painting tool.

What paint-on tools are available

The Cloud Slicer can include these paint modes, depending on the selected slicer engine and your account permissions:

Color painting - assign filament slots to selected surfaces of a model.
Support painting - mark support enforcers or blockers on the model.
Seam painting - guide where the slicer should place or avoid seams.
Fuzzy skin painting - apply fuzzy skin only to selected regions.

Paint-on tools are not available with every slicer engine. If a painting button is disabled or missing, check the selected engine, the printer profile, and your role permissions.

Color painting

Color painting is for multi-color and multi-material prints. You add the filament slots you want to print with, open color painting, choose a slot, and brush or fill the areas that should use that filament.

For the full workflow, see How to use color painting.

Support, seam, and fuzzy skin painting

Support, seam, and fuzzy skin painting work in a similar way: select the tool, choose the mode or brush type, then paint the area on the model.

Use support painting when automatic supports need help or when you want to block supports from a visible surface.
Use seam painting when you want the seam on a less visible edge, or away from an important face.
Use fuzzy skin painting when only part of the model should have a rough texture.

For the full workflow, see How to use support, seam, and fuzzy skin painting.

Multi-color setup

Painting a model is only one part of multi-color printing. The print also needs the right machine profile, filament slots, filament profiles, and purge or wipe settings.

For the broader setup, see Multi-color and multi-material printing in the Cloud Slicer.

Brush basics

Most paint modes use the same basic controls:

Choose a brush type, such as sphere, circle, triangle, or fill.
Adjust brush size for broad or precise painting.
Use fill when a connected surface should be painted quickly.
Use clear to remove the current paint type from the model.

The exact panel changes depending on the paint mode.

Things to check before slicing

Before you slice, check that:

The right filament slots are added and selected.
Each filament slot has the right filament profile.
Paint markings are visible on the model.
Wipe tower and flush volumes are configured for multi-color prints when needed.
The selected slicer engine supports the paint mode you used.

Updated on: 26/05/2026

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