Finishing Talk Forums - The Online Surface Finishing Community - 1950s anodizing project 2009-08-16T00:31:01Z PunBB http://finishingtalk.com/community/topic1117$2.html Re: 1950s anodizing project <p>It will be non-conductive if it's anodized.&#xa0; I would expect that it's anodized given the era.&#xa0; It may have been organically dyed and after all that time faded substaintially.&#xa0; But it may have been dyed with FAO, common for electronics at that time, which produces a bronzish gold color.&#xa0; It's difficult to be sure with any non-destructive test.&#xa0;&#xa0;</p> leoherrington 2009-08-16T00:31:01Z http://finishingtalk.com/community/post2554.html#p2554 Re: 1950s anodizing project <p>If the color is bronzish, it may be chromic acid anodized.&#xa0; (aka Type I).&#xa0; Or it could be simply chromated aluminum using a hexavalent chromate.&#xa0; Or it could be sulfuric anodized or hard-coat anodized and finished with a chrome-containing sealer.</p><p><br /></p><p>Do you have any photos to share?</p> DustinGebhardt 2009-08-02T22:41:24Z http://finishingtalk.com/community/post2527.html#p2527 1950s anodizing project <p><br /></p><p>Hello</p><p>I am a new member with a restoration project of an old guitar amplifier from the late 50's. There is an aluminum control nob that is missing but I cant quite figure out the finish on it. </p><p><br /></p><p>I am suspecting anodizing with a subtle bronzish color. Is there any way to confirm that anodizing was the finish used ?</p><p>does anodizing necessarily make the surface electrically non conductive ?</p><p>thanks</p><p><br /></p><p>paul</p><p></p> centervolume 2009-07-28T14:30:44Z http://finishingtalk.com/community/post2512.html#p2512