Has anyone ever used file chalk? Does it help improve the finish while you are filing?

it keeps the file from clogging up and leaving large gouges in your work...I use sidewalk chalk from wal mart

Welding suppliers sell chalk for marking steel that is what I prefer. And you need a file card to clean the teeth really often then reapply chalk

So, you can use chalk or soap stone? How often do you clean & reapply? I'm sure it has something to do with how much you are filing, but is there a rule of thumb?

re-apply the chalk after you clean it with a file card ...by the way they make two types of file cards one looks like a flat wire brush the other is a stiff brush on one side the other side is a flat wire brush. the betterof the two is the combo brush