Jim,
 The reason to let the copper napthenate dry and then wax is so it gets a
light coat of wax and the beekeeper doesn’t handle it, as it is toxic to man
as well as termites, etc.  Hive stands last longer with this treatment in
the north.
Charles Andros
Linden Apiaries since 1973
Former NH/VT Apiary Inspector '78-’89
Walpole, NH
03608-0165 USA/EUA
Residence: Latitude: 43° 05’ North, Longitude: 72° 21’ 15" West, Elevation
1200’
Keeper of 41 two-queen colonies for honey, pollen, propolis, pollination,
nuclei, beeswax, apitherapy, and education