Anglerman,
bigsmoken hasn't been logged-in here for a couple years. I haven't ventured into honey powder yet...probably due to my heavy use of ground red bell pepper when I want a sweeter profile in my rubs...sometimes, old habits are hard to break, especially when they work well for you.
The only way I've read of creating honey powder reliably is to mix it with Maltodextrin, IIRC...it is used to absorb moisture/fats when making powders from semi-liquid foods. It's a common food additive that is actually an artificial sugar classified as a polysaccharide. There two types: one is resistant to digestion, adds no calories to the food due to the human body's inability to break-down this form with enzymes, and, acts similarly to dietary fiber when consumed. It comes from the same source, but is further processed. The other is digestible due to being a simple carbohydrate, and thereby does contain calories. There are differing opinions on health effects, depending on the type and quantity consumed. My opinion is to keep my ingredients as natural as possible, within reason. I currently do not have the desire to use these type of processed ingredient cock-tails...just me.
Other forms of commercially made honey powder convert liquid honey to powder with a drum/roller or spray-drying process (honey sprayed from a nozzle into a heated chamber). Advanced technologies such as microwave vacuum/freeze drying are also used. None of it sounds easy to do at home without the ability to fabricate or acquire some specialized equipment, but if one felt inclined to accept the challenge, it would keep you busy for a bit while you designed a system to handle the task.
I doubt that a fruit-roll tray in a
dehydrator would be a quick method, but, it might be worth a shot to eventually get it dried enough to grind it into powder. If I tried it, I'd keep temps at a reasonably low (135-145*F) range for a trial run. Bump the temp up if the resulting drying effect is excessively slow. And don't forget to exercise your patience...as it may take an eternity to remove the moisture from liquid honey with heat and low-volume air flow only. Hmm, someone on here may have attempted this method, recently...I'll post a link or more info if I figure out who it was...might have been passed on to me via PM.
Eric