How to protect new hive?

[Mellifera Crofter]

... Peter Edwards, sometime poster here, treated all his boxes by immersion in a boiling tub of beeswax - a bit like frying chips he said. ...

I think Peter Edwards used paraffin wax rather than beeswax for frying his hives and swears by it. ...

Here is a link to Michael Bush's wax-dipping method (Bushfarms). It sounds like Peter Edwards' method, but he includes 'gum rosin'. I suppose that is gum resin - but I have no idea where to find it (apart from small quantities at printing suppliers), or whether it is an important ingredient.

Kitta