Yes. I use straight candle wax. I did add, part the way through my waxing adventure, some ptfe lubricant (ptfe plus light oil) to the wax but I did not notice a difference.

The wax a little feels hard for the first 1km but after that I don't notice that my chain is waxed not oiled, except that it has a very slightly increased noise, especially after a few days.

I have been waxing about every 300km.

I overheat my wax.

There is an electric saucepan with a knob for choosing the temperature at a local second hand shop and I am thinking of getting that.

I have ordered some PTFE from China. I wonder if it will come caked.