I have always used it since I started quilting. Must have been in a book about hand quilting. My little box of wax is so well used. I saw a block of beeswax at my hardware store for 1.00. It is a little bigger than a bar of soap. I think it came from a local beekeeper. That's enough for the rest of my life.
I also use it for drawers that get sticky, zippers that don't slide well, etc. Lots of uses.