I have need of an old tool called a 3 cornered scaper. It is at first sight, similar to a triangular file, with no teeth. Does anybody know of a place in the UK where one can be purchased? Or failing that, I was informed that such an implement can be manufactured from an afformentioned triangular file, with the teeth ground off it by a grinding wheel, and three fine edges left on it. Does anyone have any experience of this.