hillwilliam,
Is there a model number for the file you prefer, and are you set up to photograph closeups of the edges?
I was ready to settle in with a book last night when your latest post arrived. I spent the next couple hours searching for detail on the Oberg double bevel file...., trying to find a closeup pic showing the slightly rounded edges, hoping to perhaps find some NOS or some in-production files with a similar design. No joy.
For some strange reason, sharpening files get no respect from photographers...., no "money-shot-closeups". Where are the Saw File Swimsuit Calenders? :dunno:
I tried to lift a pic from the Save Edge website which shows a better/closer shot of their double-bevel. I could get the URL of the thumbnail but struck out with capturing that of the enlargement as they have it protected and a few minutes of changing code around failed to trick the code into submitting to my wishes. If you go to this
Save Edge page and click on the right chisel bit thumb, it appears to show the files corners have been relieved. Is this similar to the Oberg? Save Edge says their edges and sides are single-cut. Are the Obergs double?
I did come up with a plan to further my investigation, but it would help greatly if you could provide a model number and/or perhaps closeups of the Oberg corners without being inconvenienced.
Be well,
Lance