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Thread: Quick Radius Filing

  1. #1
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    uv8452's Tools

    Quick Radius Filing

    It is common practise to blunt sharp corners with radii. The known techniques vary from a coarse treatment with a angle grinder to a programmed and milled radius. Both extremes insult the eyes and the thoughts of an engineer. Be it the open negligence (which one then expects to find also in the guts of the machine) or be it the generous waste of time and money. The observer will suspect a lack of common sense in both cases. I will present you a filing technique for any radius which is very fast yet still pleasing to the eye. The secret is to approximate a radius by an octagon, then "16-gon".

    By the way:
    You can use this technique also for outer (positive) radii of turned workpieces in small lathes.
    Small machines don't like the wide chips of radius tools.

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  2. The Following 8 Users Say Thank You to uv8452 For This Useful Post:

    billster (Jul 25, 2021), Dimitris Polychronis (Jul 31, 2021), DIYSwede (Jul 23, 2021), johncg (Jul 26, 2021), Jon (Jul 29, 2021), kngtek (Jul 23, 2021), NortonDommi (Jul 24, 2021), nova_robotics (Jul 25, 2021)

  3. #2
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    Thanks uv8452! We've added your Radius Filing Method to our Metalworking category,
    as well as to your builder page: uv8452's Homemade Tools. Your receipt:

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  4. #3
    Supporting Member NortonDommi's Avatar
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    Good tips. Something I see people do often is use a round or 1/2-round file to file a concave curve when they should be using a flat, square or 3-square file, the wider the better for any given radius.

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