Intro & Scope

Bambu Studio manual focused on Bambu Lab A1 without AMS Lite, based on real behavior from your actual setup.

Bambu Studio: 2.4.0.70 Verified on: 2025-11-28 Profile: A1 · No AMS

Prepare – Supports & Surface Tools

This page covers interactive tools in Prepare mode that let you paint or restrict behaviors on specific surfaces.

Paint Support Tool

Paint Support lets you tell Bambu Studio exactly where supports are allowed (or forbidden) on a model surface.

Controls & colors (as shown in the UI)

Left mouse button: Enforce supports (Purple)
Right mouse button: Block supports (Red)
Shift + Left mouse button: Erase painting (Grey / default surface)
Ctrl + Mouse wheel: Set pen size
You may also see a cyan highlight where the model contacts the build plate (visual aid).

Tip: Treat this as “painting rules” onto the surface. You are not placing physical supports—you’re defining where the slicer is allowed to generate them.

Paint Support tool in Prepare mode (example model).

Support painting colors (Enforce / Block / Erase) and plate-contact highlight.

Example of painted support regions applied to the model.

Fuzzy Skin Painting Tool

Fuzzy Skin painting is used to apply (or exclude) fuzzy skin on specific surfaces, instead of enabling it for the entire model.

Fill tool options

Smart fill angle: Limits the fill to connected faces that fall within an angle range. Useful for quickly targeting a band of surfaces without spilling onto neighboring geometry.
Section view: Lets you see and paint internal/occluded surfaces by cutting the view. Helpful when the area you want to paint is hard to reach from the outside.

Tip: If fill is jumping onto faces you didn’t intend, lower the smart fill angle so it stays on surfaces that are closer to the face you clicked.

Fuzzy Skin painter – options panel (example view 1).

Fuzzy Skin painter – options panel (example view 2).

Fuzzy Skin painter – options panel (example view 3).

Fuzzy Skin painter – options panel (example view 4).

Related: Prepare (landing)