The new Wolf High Speed Steel (HSS) wax burs have coarser teeth than regular HSS burs you may have been using (or trying to use) for wax work. The coarse teeth give you excellent cutting action on carving waxes and because they are made of HSS, they will last for a lifetime of wax carving. Wolf HSS wax burs are made by Spearhead in the USA.
I have a couple of these. They are by far the best wax burs I have used. They are super sharp and they don't clog up. They are so good that they will also tear up your fingers more than any other bur. I plan on eventually buying the complete set of these with the wood box.