Maybe 15 or more years ago at the State Fair, before the Richmond Raceway bought the old Fairgrounds, I asked a beekeeper about buying beeswax in bulk. He was selling little "Sticks" of it all nice and clean. He informed me if I didn't mind it being truly "raw," he would sell it very cheap to me. I got a big block of it for next to nothing, but it barely resembled bees wax. It was almost black with dross and legs and wings throughout.
I broke chunks off with a chisel and mallet.
I already knew to use a double boiler to heat it up and bought a cheap food strainer with a handle to strain out the dross/legs/wings/etc. For smaller batches, I heat it in a Pyrex measuring cup in the microwave before straining.
I already had an old cup cake pan I had used for casting large quantities of lead into small handy sizes, so I used that to make a few beeswax cakes for waxing linen thread to sew leather.
I used more to make a 1:1:1 ratio of beeswax to turpentine to BLO mixture, which is an old to almost ancient finish for wood hand tools and some people use it on gun stocks.
Going to try making some Coad someday, but haven't gotten around to it yet.
Surprisingly, I still have about half the huge block of raw beeswax to this day. Yet I've already gotten many times what I paid for it and even considering my time, the price was definitely right.
Gus