Re: Cleaning wax
I use a solar wax melter to get the wax separated from the combs. There is a metal gauze that keeps most bits out of the wax. Once a year, I melt the wax I have collected, in water that has oxalic acid mixed in (2-3 grams/ liter) . 10-15 minutes after the wax has melted, pour the molten wax and some water into a plastic mold (its much easier to get the hardened block out if the form is flexible). Some impurities remain on the underside of the block of wax, these are scrapped off and can be remelted as there is some wax in these remains. The water/oxalic acid mixture can be used again 4 or 5 times depending on how dirty the wax was.
Even old brood comb wax that was green/brown comes out a lovely yellow gold color with that wonderful bees wax smell.
I am not sure about the chemistry in this method, but I do know the oxalic acid does an amazing job in purifying the wax, even if I thought the wax was quite clean after this simple process I am amazed how dark the water ends up and how clean the wax is.
Give it a try, especially if you have some old dirty wax laying around that you thought is good for nothing.
Stephen 40+ hives. 6th year. Treat. Germany.