Archived posting to the Leica Users Group, 2020/07/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Chimes on a windy night? I hope they're not too close to your bedroom window! On 09/07/2020 15:28, Jim Nichols wrote: > I checked the? chimes with a magnet, and the material is non-ferrous.? > It appears that the chimes and clapper are cut from the same tubing > material, which appears to be aluminum.? From my university days in > the 1940s, I recall that one of the popular aircraft materials was > called ALCLAD, which was an aluminum alloy protected by a coating of > pure aluminum to resist the effects of corrosion. > > I must assume that the continuous tapping of the clapper causes some > type of reaction in the material. > > On 7/9/20 8:35 AM, Philippe via LUG wrote: >> The culprit will be the horizontal clapper, made of a different >> material. Electrolysis over time and banging will have depositied a >> thin layer over the protective skin of aluminium oxide. >> >> >> Amities >> >> Philippe >> >> >> >>> Le 8 juil. 2020 ? 19:16, Jim Nichols <jhnichols at lighttube.net> a >>> ?crit : >>> >>> These old aluminum chimes have oxidized from years of contact. >>> >>> http://www.gallery.leica-users.org/v/OldNick/20200708-P7082399.JPG.html >>> >>> -- >>> Jim Nichols >>> Tullahoma, TN USA >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >>