",A vice is a screw apparatus much like a clamp which is used to secure tools such as saws, planes and etc.Since a cross cut saw has teeth on both sides it is best that you deal with one side first.Secure the cross cut saw between the two vises placed on your workbench with the one side of teeth side up.Once secured, take your metal or diamond file and place it against the bevel of the first tooth." . . . .