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