To cut 3D models for VFX using nodes, import the model into a node-based DCC tool (e.g., Houdini, Blender), then use boolean or slice nodes to define the cut area and split the geometry.
Node graphs let you visually link these tools—boolean nodes handle subtraction/intersection, slice nodes split along planes/curves—preserving edit history for VFX adjustments like simulations or texturing. Popular options include Houdini’s Boolean SOP or Blender’s Geometry Nodes Slice, which let you tweak cut position/angle non-destructively (useful for debris or damaged assets).
For beginners, start with Blender’s Geometry Nodes: Add a "Slice" node, connect it to your model and a plane, then adjust the plane’s position to practice simple cuts before complex boolean operations.