Monday, July 19, 2010

No Goldmine

Well, the first layers of paint are off the seat arms (not to be confused with the seat ends).  In my readings I've only seen a single reference to nickel plating on seat parts.  After stripping the paint it became apparent that the seat arms were plated.  I of course assumed that it had to be nickel if not German silver, a mix of copper, nickel and zinc, as it did not look at all galvanized.  With my prize in hand I went over to the Senior Sawyers, retired volunteers helping to keep the replica ship Kalmar Nyckel in good shape, many of whom were Dupont engineers.  Needless to say I was mobbed with interest and in a couple days time I had a complete description of the base metal, the pivot metal and the zinc plating.  There went my goldmine, however it remains a mystery as to how it was applied.  It does not show spangles that it should if were hot dip galvanized, yet looks heavy for electroplating.  Though it is all a mute point, as it was originally covered by a zinc oxide primer with powdered brass in varnish finish coat.  The other question is what do the letters mean?  Feel free to speculate.