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The upright snap tabs bent across the layer lines, which cracks in PLA. Each clip is now a thin arm along the board's short end, anchored at a corner with the lip at its free end, so it flexes in the layer plane. The arms stand on the bed in slots through the plate (no supports) and leave room for the USB plug. Asserts guard the USB keep-out and keep the bending strain under 1.5 %; the echo reports it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>