# SDF FBM node¶

The **SDF FBM** node adds layers of noise to a base 3D SDF shape.

## Inputs¶

The **SDF FBM** node accepts a single input in 3D signed distance function format.

## Outputs¶

The **SDF FBM** node generates a signed distance field of the base shape with the noise applied to it.

## Parameters¶

The **SDF FBM** node accepts the following parameters.

The

*Mode*of the operation, either additive of subtractive.The amount of

*Iterations*performed.The

*Smoothness*of the boolean operation performed at each iteration.A

*Scaling*control to adjust how much the size of the noise is adjusted at each iteration.