Archived posting to the Leica Users Group, 2008/08/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Thu, Aug 7, 2008 at 10:37 PM, Jerry Lehrer <glehrer@san.rr.com> wrote: > Dan, > > I'm afraid you are wrong. Even Marc Small will tell you that the bumps are > bi-metallic > corrosion products caused by copper alloy rivets being used in aluminium > structure. The > resulting oxides and metallic salts are bulkier than the aluminium and > hence > they bulge the > leather covering. > > Do a little research first! I knew it was something like that, but for the naked eye, they just look like bubbles and I didn't care enough about the chemistry. D