I am in need of some scorching sand for heat shading veneer and for hardening goose writing quills. I got a couple of cups of sand from a friend, it was left over from an out door cook oven. It is coarse construction sand and was in need of cleaning.
I first ran it through a coarse sieve [12 wires per inch], the stuff that didn’t make it through went into the garden. I then ran the sand through fine brass screen [20 wires per inch]. The stuff that didn’t make it through I separated out and saved it for future use, thinking I would still need to wash it when I was done.
Everything that fell through the fine brass wire screen contained all of the fines and dust, which I assumed I would have to wash it and dry it out. As I was pouring the sand from one container to another the wind blew some of the fine dust away. Now I was winnowing the sand and in about 15 minutes it was very clean. I didn’t have to wash it after all.
The size of the sand really does not matter for scortching wood or hardening quills, but it is nice to have two different sizes of winnowed sand.