Jim,
 I heard about using wax-rosin at Weaver’s in Texas, USA.  They may have
thought it helped adhesion for their wooden nuc feeders.  I don’t think they
use paraffin in HI.  Is rosin cheaper than paraffin?  I use 129° melting
point paraffin from Walnut Hill Waxes in Bristol, PA.  Where do you get your
rosin?
 Regards,
 Charles Andros
 Linden Apiaries since 1973
 Beekeeping Supplies
 Former NH/VT Apiary Inspector '78-’89
 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