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* claim: #2672 Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> * Chamfer: one pick follows a straight edge's curved tangent chain at any size (#2672) chamfer_tool built a single-edge cutter for a straight edge even when the edge runs on tangentially into an arc (a slot side into its end). The cutter's overshoot (max(2*distance, 1% of the part size)) is probed for material beyond the edge ends; on a small part the probe hit the arc's material and the cutter was refused, so the blend followed the whole chain. Past a bounding-box diagonal of about 200 mm the overshoot cleared the arc, the cutter was accepted, and only the straight edge was chamfered, silently. A straight edge whose smooth chain contains a curved edge no longer gets a cutter; it takes the chain-following blend, as at small sizes and as a fillet does. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>