When wood chips are to be made into char, it is beneficial that all the chips be the same size. Otherwise, the smaller chips will burn up completely and turn to ash, while the larger chips are not converted into char.
Here i demonstrate a very simple, low-tech, low-cost method of sorting and separating the wood chips by sifting the chips through wire screens.
![](https://i.ytimg.com/vi/26PfUorWgtM/maxresdefault.jpg)