{
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  "preset": "v60_01",
  "surface_style": "ribbed_petal",
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  "single_piece_inner_radius_mm": 35.84459425703274,
  "single_piece_angle_deg": 170.27956342758583,
  "seam_allowance_mm": 8.0,
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  "support_max_span_mm": 132.95454545454547,
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  "support_hole_diameter_mm": 22.727272727272727
}