How to stop honey crystallizing?..

[PhilK]

... rather than some arbitary 'scientific' measure.

Scientific measures don't tend to be arbitrary .. they're usually the opposite!

Agreed though that heating honey up to whatever the bees store it at can't be too bad for it, surely?

[GSF]

The main reason I do the process I described earlier is because it preserves the taste. I have ate honey that was uncapped with a heat gun and compared it to honey cut with a knife. Definitely a notable difference to my taste buds.