At what temperature will it revert back to liquid?
That is what i did with the last bit i had left i used a poly hatch egg incubator set at 39C for 24 hours, it did not go as runny as it was too start with but i was able to get it out of the jars, i put a jar of it in the food blender for 5minutes and then added it to a couple of other jars as a seed, it is still soft set and easy to use.I use 39-40 degrees C over 24 hours, I never go higher.
Sorry to say but in my experience once it goes hard in the comb the bees wash their hands of it. They can be persuaded to move it but it takes serious hive tool work to do.
PH
I put it in the sun room this afternoon. It is now liquid.
LOL and so is the wax. Been there would never do that again.