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The Combinator takes two sets of items and pairs them, so a generator can run across the combinations. Add it from the Utilities menu. It has two inputs (A and B) and two outputs (A and B). Connect a source to each input, choose how to pair them, and connect the outputs to a generator.

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Strategies

  • Cartesian — every item in A with every item in B. Three products and four materials make twelve pairs.
  • Paired — match by position: A1 with B1, A2 with B2. Both sides need equal counts.
A Combinator node with two inputs feeding a Generate Image node

A Combinator pairing two sets before a generator

For the full explanation, worked examples, and when you don’t need a Combinator, see combining inputs.