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Clifford GarwoodandClaude Opus 5
c94e8324d0
The IMEX branch of the 1st->2nd layer temperature transition is mutually exclusive with the standard per-extruder path in its `else`, but it skipped the head carrying the print's own toolpaths on the premise that "the standard per-extruder temp path already addresses it". That path is the `else` branch and never runs for a parallel mode, so the printing head received no transition at all and held nozzle_temperature_initial_layer for the entire job. Emit for every carriage the mode drives, the printing one included. The printing head takes this layer's own filament; the parallel carriages, which carry no toolpaths of their own, keep resolving through the per-plate head map with pem inversion as the fallback. The lookup now goes through get_filament_config_index() like the standard path, since a variant-expanded printer gives a filament its own column and a raw index would read the wrong one. Reproduced on a 4-carriage IQEX in copy mode: the only temperature command in the whole file set the idle secondary carriage to the value it already had, while the head doing the printing never left its first-layer temperature. The defect is invisible whenever initial and regular temperatures match, which is why earlier per-tool validation passed. Tests cover both gantry counts, since the active set comes from the mode's tool roster: an IDEX copy mode drives two carriages, an IQEX mode drives four, and the IQEX case asserts a first-layer filament and a second-layer transition for each of the four. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
OrcaSlicer tests
Building, running and writing tests is documented on the wiki, under How to Test.
Two files here rather than there, because coding agents only read what is in the repository: