After cleaning the beeswax. Why do I need a remelting?

In the first video the wax was melted, and in the second it was poured into stainless steel trays and cut into "bricks". In this video, what's left on the bottom of the tank I'm melting wax in.
It took pure wax and I had to clean as thoroughly as possible from the precipitate, which appears after settling the wax in molten form. In this case I used a steel sponge.
In appearance, the wax was pretty clean, but after, as it turned out, came into the sediment stems of grass, dust and fragments of bees.
In General, disks remain after remelting and in the future they can be remelted, all together, once again.
To clean the wax need to avoid breakage of the candles. For uniform color wax in bulk.
The wax becomes more dense and acquires plasticity to the finished candles.
If you have any questions - write in the comments.
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