
I design cookie cutters and I end up chamfering some really awkward angles. I would like to be able to know exactly what angles work so I don't have to waste any time fiddling around when I trace the shape of an image. I trace (make a sketch of) the image, offset the traced image and extrude the profile that is made by the two offset lines. I then chamfer the outside edge of this extrusion.
I would suggest being able to select the problematic lines and select a function that translates those lines to the nearest workable angle.