How to assign colors and filament slots to a model
How to assign colors and filament slots to a model
You can assign filaments to models in the Cloud Slicer from the Filaments sidebar, the object list, or the object context menu. Use this when a whole model, object part, selection, or plate should print with one filament.
Before you start
Open Slicer from the left menu, then choose the printer or machine profile you want to slice for.
Make sure:
- The selected engine supports multi-material slicing
- At least two filaments are configured in the Filaments sidebar
- Each filament slot has a filament and filament profile
- The objects you want to change are not locked, because locked objects can make assignment controls unavailable or disabled
- Slicing is not currently in progress
Add another filament slot
In the Filaments sidebar, use the add filament control to add another filament slot.
The Cloud Slicer only allows multiple extruders when the selected engine supports multi-material slicing. If the add control does not appear or does not add another slot, check the selected engine and printer profile.
Assign a filament from the sidebar
You can click a filament card in the sidebar to select it.
When per-object multi-color is allowed and you have a single object or a uniform selection selected, clicking a different filament card assigns that selection to the clicked filament. When a mixed multi-selection is selected, the sidebar can show an apply action for the target filament.
When per-object multi-color is restricted, clicking a filament card assigns the active plate to that filament instead.
Assign a filament from the object list
When per-object color assignment is available, the object list shows a filament icon next to objects or groups.
To change an object:
- Find the object in the object list.
- Click its filament icon.
- Choose the filament you want to use.
For grouped or multi-part models, the parent row can apply one filament to the solid parts in that group. Individual part rows can also have their own filament controls when the model structure supports it.
Assign a filament to selected objects
You can select multiple objects and use the selection context menu to change their filament together.
This option is only shown when:
- The engine supports multi-material slicing
- More than one configured filament is available
- Per-object filament assignment is allowed
- The selected objects are not locked
Assign one filament to a whole plate
If your setup is restricted to one color per plate, per-object controls are hidden. Use the plate-level filament assignment so every printable object on the active plate uses the same filament.
This keeps the plate uniform and avoids creating multi-color regions inside the same plate.
What the colors mean
The color shown in the slicer comes from the configured filament slot. Changing the filament color updates objects assigned to that filament.
The visual color is only part of the setup. The filament profile is still important because it controls slicer values such as temperatures and filament behavior.
Troubleshooting
If the assignment control is missing, check these common causes:
- Only one filament is configured
- The selected engine does not support multi-material slicing
- Your account or role does not allow multi-color per plate
- The object is locked, which can make assignment controls unavailable or disabled
- Slicing is currently in progress
- The filament slot does not have a filament selected
Related articles
- Multi-color and multi-material printing in the Cloud Slicer
- How to select filament and filament profiles
- How to use color painting
- How to configure wipe tower and flush volumes
Updated on: 26/05/2026
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