Layerling has no import API, no postMessage hook and no import URL parameter, so EdgeSlicer feeds files through the page's own hidden file input. It sends STEP when every part has exact geometry, colored 3MF for multi-filament parts, and STL otherwise.
From the Grok pain-radar digests, Nov 1-2 2026 (Nov 1 8:41 AM ET through Nov 2 7:41 AM ET digests plus the Haitch editions). Verified live 2026-11-02: issue/PR read; title and state confirmed.