Fire Wire

It bridges the Fire family into utility/production chains, so it is a more specific target than the generic element output.

When it fits: Use it when the chosen system or recipe explicitly needs Fire Wire.

The tradeoff: One source recipe run makes 1 and lists 6 Aether, 1 Elemental Fire at Molten Anvil; 2 recipe variant(s) for this output are grouped together. Verify access where the pack is incomplete. Its build cost is only the wire item; route compatibility and any continuing power constraints are separate.