The standards used by the U. S. Navy and Smithsonian

have been relatively unchanged since 1945:

  • Resistance to actions of temperature, humidity, and light is essential...It is advised that fiberglass resins, styrene, expanding foams, casting resins, and cyanoacrylate glues be avoided when other materials can possibly be used.
  • 'Workmanship shall be in accordance, in every respect, with the best model-building practices. Hulls shall be smooth, fair, and symmetrical; without blemishes, sap pockets, or tool marks, and shall be scraped and sand-papered to smooth surface. Castings shall contain no visible mold marks.'
  • Any item with any scale dimension of 1/8" or greater must be must be consistent [no super-detailing of one part of the model contrasting with lesser levels of detail elsewhere].
  • A great deal is specified about acceptable and required materials (e.g., 'Propellers should be cast in bronze... Plastic propellers are not permitted').
  • 'Painting of models shall receive careful attention...All parts of the model shall have a surface treatment representing the actual vessel if reduced in scale...models shall be spray painted with opaque lacquer. Paint shall be applied thinly and evenly so that fine detail will not be obliterated. The use of metallic paints such as silver or gold is discouraged. The use of white enamel or natural varnish is not permitted'... 'Wooden parts shall be sufficiently filled and primed so that when rubbed down, the wood grain is not visible.'

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