As a beekeeper, you end up with a lot of brood frames which need replacing, wax scrapings and mappings from when processing honey. Melting these down by heating up with water will not remove the impurities such as propolis, dead bees and other waste. An easy way to both remove the wax and as a first stage filter would be to heat the frames or whatever in a black box sealed under glass.
This was an unused double glazed roof light, the back sealed with a piece of wood and the inside lined with aluminium painted black. The box was tilted to point at the sun, and the bottom edge was lined with aluminium foil to collect the wax.
The wax/tin foil mix was was then heated with water to melt it into a more convenient shape and filter it some more. One trick is to put the dirty wax into an old pair of tights and heat up, the was will liquify and escape to float on the surface and the debris will remain behind. This is great, but some debris float to contaminate the wax. Using the same principle of a cafetière, I make this press to keep the debris on the botton whilst the wax cools. The filter was cnc cut out of aluminium plate
To make this ( yes, our floor was dirty )