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Small parts such as 1.5" test squares on a 2" laser grid rest on at most one grid point, so no single support tab can bring their center of gravity inside the contacts and Plan Cutting warned "no single tab can steady it" on every one. In practice a part that short stays in the sheet on its tab, so the bed's contacts don't matter. Cutting Settings > Tabs gets "Tab alone holds parts up to N long" (CuttingParameters.TabHeldMaxLength, 0 = off, the default). On a plate with a bed, a part the bed can't hold level whose length (long side of its minimum-area bounding rectangle) is within the limit is still tabbed, but any tab clear of inside corners steadies it, so Plan Cutting, hand-placed lead-ins and the pre-post review warn only when it has no tab at all. The setting persists with the cutting parameters and is part of the plan state fingerprint. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>