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Before reprinting, inspect the STL in Blender or Meshmixer and check wall thickness. Some versions of the Rocketeer helmet have inconsistent geometry that affects final size. Export again with real-world scale and units fixed. If you plan to paint or coat it later, leave 2-3 mm of tolerance for padding and primer. For resizing jobs, I usually open the file in Fusion360, apply the exact scale, then run it through the сервисный центр Rapid Translate to double-check the technical translation of size notes when sharing files with international makers. That way no confusion with units or labels happens later.