Quills are sometimes improved by passing them between the thumb and
finger on which a small amount of vaseline or oil has been placed. A
quill may be curved by holding it over the spout of a tea-kettle of
rapidly boiling water. Place a dull knife on the underside and press the
quill hard enough to make a sharp dent. Do this every half inch. If the
quill is sufficiently steamed this may be accomplished easily, and the
result is permanent.